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Best overall alternative: choose the QNAP TVS-h874 if you need more drive capacity, dual 10GbE and PCIe expansion; choose the Synology DiskStation DS1525+ if an easier backup and media-management experience matters more than flagship performance. The ASUSTOR Lockerstor 6 Gen2 preserves six-bay capacity with a broad multimedia app catalog, while the TerraMaster F6-424 is the value-oriented Plex/Jellyfin choice. The TerraMaster F6-424 Max is the six-bay option for buyers who specifically need dual 10GbE.
No candidate has a published, apples-to-apples test proving a particular number of simultaneous 4K transcodes. Your clients, codecs, subtitles, network and storage layout determine the result, so treat stream-count promises as unreliable without testing your exact library.
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What you are replacing
The UGREEN NASync iDX6011 Pro is unusual among home NAS appliances because its published specification emphasizes workstation-style computing as much as storage. It combines an Intel Core Ultra 7 255H (16 cores, 16 threads, up to 5.1 GHz), 64 GB of LPDDR5/x memory, six SATA bays, two M.2 2280 NVMe slots, a 128 GB system SSD, dual 10GbE, a PCIe Gen4 x8 slot, two Thunderbolt 4 ports, SD 4.0 and HDMI output supporting 8K. Its RAID modes are JBOD, Basic, 0, 1, 5, 6 and 10. UGREEN states a maximum of 208 TB using six 32 TB drives plus two 8 TB M.2 drives.
That specification makes the iDX6011 Pro attractive for containers, virtual machines, fast editing workflows and several demanding services in addition to a media library. The compromise is software choice: a TechRadar review found that Plex was not in the main app library, although Jellyfin, Theatre, Docker and SSH installation were alternatives. That is a software-path issue, not proof that Plex cannot run.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Shortlist at a glance
| Model | Drive bays and expansion | Memory and processor information | Networking | Media-server path | Best reason to choose it | Known trade-off |
|---|---|---|---|---|---|---|
| Synology DiskStation DS1525+ | Five 3.5-inch SATA HDD or 2.5-inch SATA SSD bays; two M.2 2280 NVMe slots; Gen3 x2 network-upgrade slot | 8 GB DDR4 ECC SODIMM, expandable to 32 GB; lower-tier platform than the iDX6011 Pro | Two 2.5GbE ports; optional 10GbE module | Synology Media Server streams music, photos and video to network devices; verify Plex package support for the exact model and DSM release | Mature DSM administration, backup ecosystem and lower-power orientation | One fewer bay, less default memory and slower built-in Ethernet than the iDX6011 Pro |
| QNAP TVS-h874 | Eight 3.5-inch SATA bays; two M.2 2280 PCIe Gen4 x4 slots; two PCIe slots; HDMI | Up to 64 GB DDR4; listed TVS-h874X-i9-64G configuration has a 16-core/24-thread Intel Core i9 | Dual 10GbE on listed configurations | Use QNAP’s package or container route after checking the exact TVS-h874 SKU and operating-system release | Most bays, high-end CPU options and card expansion | Larger, more power-hungry and more complex; current SKU pricing and availability vary |
| ASUSTOR Lockerstor 6 Gen2 (AS6706T) | Six bays; expansion details should be confirmed on the regional listing | Compare the exact CPU and RAM configuration before planning multiple hardware transcodes | Confirm the ports on the regional listing | App Central offers UPnP Media Server and OwnTone; Plex’s compatibility list includes ASUSTOR NAS families | Six-bay capacity and a broad third-party multimedia catalog | No comparable transcoding benchmark establishes how many simultaneous 4K jobs it can handle |
| TerraMaster F6-424 | Six bays; dual M.2 NVMe slots | Intel N95 quad-core; 8 GB DDR5 expandable to 32 GB | Dual 2.5GbE | TerraMaster lists Plex Media Server support; Plex also lists TerraMaster NAS families | Lower-cost route to a six-bay Plex/Jellyfin server | CPU and network links are substantially below the iDX6011 Pro’s published platform |
| TerraMaster F6-424 Max | Six bays; two built-in M.2 NVMe slots | Verify CPU and memory expansion for the exact listing | Dual 10GbE | Verify Plex package support for the exact regional model | Six bays with 10GbE throughput | CPU details, expansion limits, availability and software support require SKU-level confirmation |
Prices, stock and retailer terms were not established for these models. Check the listing for your country and calculate the complete system cost: NAS chassis, drives, optional memory or network modules, UPS and any licensing.
Which alternative fits your priority?
Pick QNAP for capacity and expansion
Eight bays give the TVS-h874 the largest raw drive count in this group. Two PCIe slots allow you to add network or storage hardware, and the platform has HDMI output and up to 64 GB of DDR4. A listed 16-core/24-thread Core i9 configuration is the strongest documented CPU option in the shortlist. This is the appropriate direction if your media server is also a container host, virtualisation lab, editing repository or high-speed backup target.
Plan for a larger enclosure, greater power consumption and more configuration work than a small home NAS. Select the exact TVS-h874 variant before buying: processor, memory, network ports and included accessories differ by SKU, and the available configuration determines whether the headline specification applies.
Pick Synology for administration and backups
The DS1525+ is the better fit when the NAS must be manageable by the whole household rather than tuned like a server. DSM’s mature management and backup ecosystem, ECC memory and documented Media Server package make it a strong library-and-backup appliance. Media Server is designed to connect televisions, stereos and other network devices to the NAS and stream stored music, photographs and video.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
You give up one bay and start with 8 GB rather than the iDX6011 Pro’s 64 GB. The two built-in 2.5GbE ports are also slower than dual 10GbE; an optional 10GbE module and the Gen3 x2 upgrade slot can address networking, but add cost and installation work. For Plex specifically, confirm that the package and hardware-acceleration behavior you need are supported by the exact DSM and model combination instead of assuming that every Synology NAS behaves alike.
Pick ASUSTOR for six bays and app choice
The Lockerstor 6 Gen2 (AS6706T) keeps a six-bay layout, so it is the closest capacity match to the iDX6011 Pro among the alternatives. ASUSTOR’s App Central can install UPnP Media Server and OwnTone for streaming to computers, televisions and mobile devices. Plex’s compatibility information includes ASUSTOR NAS families, which gives you a documented starting point for a Plex deployment.
Do not use the family-level Plex listing as a promise of a particular transcode count. Before ordering, compare the exact AS6706T CPU, installed RAM, network ports and hardware-acceleration support with your library’s codecs and subtitle habits. Direct play may require little CPU; converting high-bitrate 4K video, HDR or image-based subtitles can be much more demanding.
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Pick TerraMaster F6-424 for a value Plex box
The F6-424 combines six bays, two M.2 NVMe slots, an Intel N95 quad-core processor, 8 GB of DDR5 expandable to 32 GB and dual 2.5GbE. TerraMaster explicitly lists “Plex Media Server” support, and Plex lists TerraMaster among supported NAS families. That makes the installation path clearer than the iDX6011 Pro’s main-library situation.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
The N95 and dual 2.5GbE are a lower tier than the iDX6011 Pro’s Core Ultra 7 and dual 10GbE. It is therefore a sensible choice for direct-play households, occasional conversion and ordinary file-serving, not a specification-equivalent replacement for heavy virtual machines or multiple demanding transcodes. Use the M.2 slots for a cache or application workload only after checking TerraMaster’s current guidance for your chosen drive type and volume layout.
Pick TerraMaster F6-424 Max for six-bay 10GbE
The F6-424 Max is the TerraMaster choice when network throughput matters more than the lowest entry price. It has six bays, dual built-in M.2 NVMe slots and dual 10GbE, restoring the faster links that the regular F6-424 lacks.
TerraMaster’s published information for this model does not establish every CPU detail, memory ceiling or regional Plex package. Confirm those items on the exact listing before treating it as a replacement for compute-heavy workloads. A 10GbE port is useful only when the switch, cabling, client and storage can sustain it; otherwise the extra interface will not improve television streaming.
Media-server software: Plex, Jellyfin and built-in packages
Plex compatibility is model dependent
Plex publishes compatibility by NAS family and platform, not as a guarantee that every processor can transcode every file. The ASUSTOR and TerraMaster families in this shortlist appear on Plex’s supported-NAS information, while TerraMaster specifically lists Plex Media Server for the F6-424. Check the exact model, operating-system version, package architecture and hardware-acceleration requirements before purchasing.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
The iDX6011 Pro deserves a separate check because Plex was not present in the main app library in the cited review. Jellyfin, Theatre, Docker and SSH-based installation were identified as alternatives. That route can work, but it may require manual updates, container configuration, permission fixes and more troubleshooting than a one-click package.
Direct play versus transcoding
A client that supports the file’s container, video codec, audio codec, resolution and subtitle format can direct-play it, leaving the NAS mostly responsible for reading and serving data. Transcoding begins when the client cannot decode one of those components or when bandwidth must be reduced. 4K-to-1080p conversion, HDR tone mapping and subtitle burn-in can raise the workload sharply.
Because no independent, apples-to-apples transcoding tests were available for these models, do not buy on a claimed number of simultaneous 4K streams. Instead, test representative files from your library: one high-bitrate 4K file, one HDR file, an audio format your clients do not natively decode and a subtitle track that may require burn-in. Observe CPU, GPU or media-engine utilisation and playback errors during peak household use.
Built-in alternatives to Plex
Synology Media Server is a straightforward DLNA-style option for televisions, stereos and other network players. ASUSTOR’s UPnP Media Server and OwnTone serve a similar purpose for compatible clients. These packages can be preferable when every playback device supports the same formats and you do not need Plex’s user profiles, remote-sharing workflow or metadata behavior.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Storage, RAID and expansion planning
Start with the data you cannot replace
Drive-bay count is not usable capacity. RAID 1, 5, 6 and 10 reserve space for redundancy, while a separate backup is still required for deletion, corruption, theft and ransomware. JBOD, Basic and RAID 0 improve flexibility or capacity but do not provide equivalent protection. The iDX6011 Pro supports all of those modes; alternatives use their own storage managers, so read the model-specific migration and expansion rules before moving an existing array.
List your current media, photographs, documents, application data and future growth. Allocate space for filesystem overhead, snapshots or versioned backups where supported. If a six-bay chassis already meets your growth forecast, the QNAP’s two extra bays may add cost and idle power without improving your day-to-day experience.
Use M.2 and PCIe slots deliberately
M.2 NVMe slots can host a cache, applications or a separate fast volume depending on the operating system. Cache is not a substitute for more RAM, a backup or faster HDDs, and a cache can complicate recovery. The iDX6011 Pro’s PCIe Gen4 x8 slot and Thunderbolt 4 ports are unusually capable; the QNAP’s two PCIe slots provide a different but similarly useful expansion path. The DS1525+ has a Gen3 x2 network-upgrade slot, while the TerraMaster models document dual M.2 slots. Verify lane widths, supported cards and boot or volume restrictions before buying hardware.
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Dual 10GbE is valuable for several workstations, large backups or editing over the network, but it does not make a single television stream faster. You need a compatible switch, transceivers or cabling and clients with faster interfaces. Dual 2.5GbE is often sufficient for several direct-play clients and routine backups. Link aggregation can improve aggregate traffic in supported configurations, but it does not automatically turn one file transfer into a 5Gbps or 20Gbps connection.
Noise, power and total ownership cost
The available specifications do not provide standardized noise measurements, idle watts or transcoding-power tests, so a quiet-room ranking would be misleading. In general, more bays, faster CPUs, 10GbE interfaces and expansion cards increase the opportunity for heat and fan noise. The DS1525+ is positioned as the lower-power choice in this group; the TVS-h874 is the larger, higher-power option. Treat those as design trade-offs, not laboratory measurements.
Budget beyond the chassis. Six or eight NAS-grade drives can cost more than the enclosure, and 10GbE switches, memory modules, NVMe devices, UPS hardware and replacement drives change the total. Prices and stock were not established for the models here, so verify a current regional listing and warranty terms immediately before checkout.
A practical buying and setup checklist
- Inventory your clients. Record each television, streaming box, phone and browser, noting which codecs, HDR formats and subtitle types it can direct-play.
- Measure storage growth. Total your current files, add the next two to three years of expected additions and reserve space for snapshots or backups.
- Choose redundancy. Select RAID or the vendor’s equivalent based on drive count and rebuild tolerance; keep an independent backup of irreplaceable files.
- Validate the software path. Confirm the exact model’s Plex package, Jellyfin installation method, container support or built-in DLNA/UPnP server before purchasing.
- Check hardware acceleration. Verify that the operating system, driver and media application can access the processor’s supported media engine; do not infer this from core count alone.
- Plan the network. Match 2.5GbE or 10GbE to your switch, cabling and clients. A fast NAS connected to a 1GbE switch remains limited by that link.
- Stress-test before migrating. Copy sample files, test remote and local playback, force a transcode, enable subtitles and monitor resource use during simultaneous household activity.
- Document recovery. Save administrator credentials securely, record the array layout, export application settings and test restoring a file before the NAS becomes your only copy.
Decision guide
| Your priority | First model to investigate | Why | What to verify before purchase |
|---|---|---|---|
| Maximum bays and expansion | QNAP TVS-h874 | Eight bays, dual 10GbE on listed configurations, two PCIe slots and high-end CPU options | Exact CPU/RAM SKU, power budget, chassis size and current price |
| Simplest household administration | Synology DS1525+ | DSM ecosystem, ECC memory and documented Media Server package | Plex availability, 10GbE module cost and five-bay capacity limit |
| Six bays with broad app choice | ASUSTOR Lockerstor 6 Gen2 | Six-bay design, App Central multimedia apps and Plex family compatibility | Exact CPU, RAM, ports and real transcode performance |
| Lowest-complexity six-bay Plex route | TerraMaster F6-424 | Explicit Plex listing, six bays, dual M.2 and upgradeable DDR5 | Whether N95 performance covers your files and whether 2.5GbE is enough |
| Six bays with 10GbE | TerraMaster F6-424 Max | Dual 10GbE and dual M.2 built in | CPU, RAM expansion, regional Plex package and availability |
| Workstation-style connectivity | UGREEN NASync iDX6011 Pro | Core Ultra 7, 64 GB memory, dual 10GbE, Thunderbolt 4 and PCIe Gen4 x8 | Whether you accept the less-direct Plex installation path |
Bottom line
For most buyers replacing the iDX6011 Pro, the QNAP TVS-h874 is the performance-and-capacity alternative, while the Synology DS1525+ is the management-and-backup alternative. Choose ASUSTOR when six bays and app variety are the priority. Choose the TerraMaster F6-424 for a documented, value-focused Plex path, or the F6-424 Max when dual 10GbE matters. Keep expectations grounded: none of these specifications alone guarantees a fixed number of 4K transcodes, and the best choice is the one whose software path, client compatibility, storage redundancy and network capacity match your actual home.
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