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TP-Link TX201 vs TX401: Which Fits Your PC and Network?

Choose TX201 for a 2.5GbE upgrade, especially when an x1 slot is the practical option. Choose TX401 for a faster network you can actually connect to, after checking its x4 interface fits your PC. Both list low-profile brackets; neither card by itself guarantees faster downloads or file transfers.

Published by Pickoryx · Published 2026-10-10

Source checked 2026-10-10 18:45 UTC

Products compared

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The buying question

Which card fits the available motherboard slot and case, and which link capability can the rest of the network use?

TX201 serves a 2.5GbE plan with an x1 interface; TX401 adds higher link modes but needs room for its x4 interface and a network that can use them.

Quick verdict

Choose TP-Link TX201 if

  • Your goal is 2.5GbE and you do not have a concrete need for the higher link modes.
  • You need an x1-interface card and have verified case clearance and driver support.
View TP-Link TX201 on AmazonPaid link

Choose TP-Link TX401 if

  • You have a suitable slot and a faster switch/router connection, cable run and endpoint to use.
  • You plan a specific 5GbE or 10GbE upgrade and accept that today’s lower-speed connection will remain a limit.
View TP-Link TX401 on AmazonPaid link
When to skip: Your desktop has no usable expansion slot or neither card has a suitable driver for your exact setup. Your existing Ethernet connection already meets your needs and the rest of the network will not change.
When the recommendation changes
  • The free slot is blocked or has a different electrical configuration than its length suggests.
  • A planned switch, cable or endpoint upgrade changes the link rate you can use.
  • The exact hardware revision lacks a suitable driver for your OS.

The differences that matter

Pcie Case Eligibility

TP-Link TX201

PCI Express 2.1 x1; standard and low-profile brackets listed.[1]

TP-Link TX401

PCI Express 3.0 x4; the linked user guide specifies an x4, x8 or x16 slot. Standard and low-profile brackets are listed.[2, 6]

What this changes: If your only usable expansion slot is x1, the TX201 is the candidate to check. For the TX401, verify an unobstructed slot that accepts its x4 interface, the electrical lane configuration and the case opening. A low-profile bracket addresses bracket height; it does not create an available motherboard slot.[1, 2, 5, 6]

The better fit depends on your priorities

Network Link Requirements

TP-Link TX201

Up to a 2.5GbE link, with 1GbE and 100Mbps modes listed.[1]

TP-Link TX401

Up to a 10GbE link, with 5GbE, 2.5GbE, 1GbE and 100Mbps modes listed.[2]

What this changes: Choose TX201 for a planned 2.5GbE connection. Choose TX401 when the switch or router port, cable run and other endpoint support the faster connection you will use. A TX401 can work at a lower supported rate, but buying it alone does not turn a slower network path into 10GbE.[1, 2]

The better fit depends on your priorities

Best for your routine

A 2.5GbE network upgrade with only a usable x1 slot

Best fit: TP-Link TX201

Based on listed features, not comparative testing.

TX201 matches that link target and interface constraint; it gives up the higher link modes of TX401.

View TP-Link TX201 on AmazonPaid link

A desktop joining a prepared 10GbE local network

Best fit: TP-Link TX401

Based on listed features, not comparative testing.

TX401 offers the required link mode, provided the PC slot, driver, cable path and other equipment are suitable.

View TP-Link TX401 on AmazonPaid link

Value and trade-offs

The offers shown are per listed package; check the quantities and current terms on Amazon before comparing totals.

If TX401 costs more, pay the difference for a usable faster-network plan, rather than the largest number on the box. Include any switch, cable and endpoint upgrades in your budget.

There is insufficient verified price history for a purchase-timing recommendation.

Limitations

  • This is a specification-based fit comparison, not a throughput, gaming-latency, security or reliability test. Negotiated link rate is not measured file-transfer or internet speed.
  • The exact hardware revision supplied by a seller is unknown. Confirm that revision, the required bracket and the current driver for your operating system before purchase.
  • Check the motherboard manual for slot lane sharing and clearance around other cards. A long-looking slot is not enough to establish the electrical configuration.
  • Follow the installation guide for the supplied revision. The TX401 guide instructs you to turn off and unplug the computer before inserting the card or changing its bracket.

Questions shoppers ask

What should I check before opening the case?

Identify the free slot and case bracket height, check whether other installed devices affect that slot, then match the card’s hardware version to its driver download. Do not assume that a supplied low-profile bracket guarantees clearance around your other components.

Will TX401 improve a connection that still runs through a 1GbE port?

Its higher link ceiling does not remove that slower-port bottleneck. Trace the whole path to the service or device you use before paying for a faster card.

Methodology and sources

Compared the documented PCIe interfaces and brackets, supported network link modes, and revision-specific driver checks. Manufacturer link rates were kept separate from real-world throughput.

AI was used for source research, drafting and editing this comparison. Pickoryx did not conduct hands-on testing of either card.

View 6 sources
  1. 1.TX201: US product specificationsTP-Link · Official specifications · Source checked 2026-10-10 18:45 UTC
    Evidence used on this page
    • Hardware Features: Interface, Network Media; bracket description; throughput footnotes: PCIe 2.1 x1, 2.5GBASE-T and lower listed network modes, standard and low-profile brackets. Actual throughput depends on the connected equipment, cable and computer.
  2. 2.TX401: US product specificationsTP-Link · Official specifications · Source checked 2026-10-10 18:45 UTC
    Evidence used on this page
    • Hardware Features: Interface, Network Media; bracket description; throughput footnotes: PCIe 3.0 x4, 10GBASE-T/5GBASE-T/2.5GBASE-T and lower listed network modes; standard and low-profile brackets. Physical link rates do not guarantee throughput.
  3. 3.TX201: US hardware-version downloadsTP-Link · Official specifications · Source checked 2026-10-10 18:45 UTC
    Evidence used on this page
    • Hardware-version selector and Driver entries: Version-specific downloads and operating-system limitations; the displayed selector is not proof of the retail card revision.
  4. 4.TX401: US hardware-version downloadsTP-Link · Official specifications · Source checked 2026-10-10 18:45 UTC
    Evidence used on this page
    • Hardware-version selector and Driver entries: Multiple hardware versions and distinct driver packages require checking the actual card version and operating system.
  5. 5.Troubleshoot TP-Link Wired Adapter Stability and PerformanceTP-Link · Official specifications · Source checked 2026-10-10 18:45 UTC
    Evidence used on this page
    • Check PCIe Lane Sharing & Slot Switching of the Motherboard: Some motherboards share lanes with SATA/M.2 and can disable or reduce other slots. Consult the motherboard manual. Numeric bandwidth-minimum assertions elsewhere on this page are not used.
  6. 6.TX401 User Guide, 2024 REV1.0.0TP-Link · Official specifications · Source checked 2026-10-10 18:45 UTC
    Evidence used on this page
    • Printed page 6: Connect to a Computer; page 9: hardware version: The guide linked by the current US V2.60 support selector specifies an x4, x8 or x16 slot, power-off/unplug before installation and replacement with the supplied low-profile bracket when needed. Hardware version is on the card/package label. It is not proof of a seller’s supplied revision.