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Vogzone for RTL8125B 2.5GbE PCIe2.0 x1 NIC, Single RJ45 2.5GBASE-T Adapter
Vogzone

Vogzone for RTL8125B 2.5GbE PCIe2.0 x1 NIC, Single RJ45 2.5GBASE-T Adapter

Bottom line: The Vogzone for RTL8125B 2.5GbE PCIe2.0 x1 NIC: Genuine Realtek RTL8125BG chip for stable, well-supported 2.5GbE; main trade-off: no ESXi 7.0 or 6.5 support despite covering 6.7 and 8.0.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Genuine Realtek RTL8125BG chip for stable, well-supported 2.5GbE
  • ✓ Auto-negotiates 100Mb/1Gb/2.5Gb over a single RJ45 copper port
  • ✓ PCIe 2.0 x1 card fits x1/x4/x8/x16 slots on any board
  • ✓ Broad OS support: Windows, Linux, macOS, DOS, OpenWrt, ESXi 6.7/8.0
  • ✓ Ships with low-profile bracket for SFF and 1U/2U builds

Cons

  • ✗ No ESXi 7.0 or 6.5 support despite covering 6.7 and 8.0
  • ✗ Single port only, so no NIC teaming or failover redundancy
  • ✗ PCIe 2.0 x1 lane caps headroom versus newer 3.0 designs
  • ✗ Copper-only RJ45, no SFP+ option for fiber runs

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SpecPicks Verdict

SpecPicks scored Vogzone for RTL8125B 2.5GbE PCIe2.0 x1 NIC using a rating × review-volume × price-fit model applied to published specs and reviews across the retro networking cards category. Vogzone's retro networking cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for retro networking cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 【Controller】:2.5GbE PCI-E NIC with Original Realtek RTL8125BG controller.
  • 【Data Rate】:Single copper RJ45 port(100MbE/1GbE/2.5GbE) let you connect to network cable for meeting the demands of data center environments.PCIe v2.0 x1; X1/X4/X8/X16 Lane.
  • 【Technical Support】:Jumbo Frames;PXE;DPDK;WOL;VLAN;Wake on LAN.
  • 【Supported Operating Systems】: Windows, Windows Server, Linux*RHEL, Ubuntu, DOS, MAC OS, OpenWrt ESXI6.7,ESXI8.0 (Doesn't support ESXI 7.0, ESXI6.5), etc.
  • 【What you Get】: Vogzone 2.5GbE PCI-E X1 Network Card RTL8125B-2.5G (compare to Realtek RTL8125B) x1, Low-profile Bracket x1.

Full Specifications

BrandVogzone
ColorRTL-2.5G-8125B(1*RJ45)
Weight2.5g
Unit Count1 Count
Model NumberVG-RLT8125B
CompatibilityMac, Linux
Item Highlight100MbE/1GbE/2.5GbE card with Realtek RTL8125BG, support Windows/Linux/MAC
Mfr Part NumberVG-RLT8125B
Number of Items1
Compatible DevicesDesktop
Data Link ProtocolEthernet
Data Transfer Rate2.5 gigabytes_per_second
Hardware InterfaceEthernet
Warranty Description1-Year Free Warranty
Item Dimensions L x W x H8.8"L x 5.9"W x 1.1"H

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Vogzone for RTL8125B 2.5GbE PCIe2.0 x1 NIC, Single RJ45 2.5GBASE-T Adapter is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Vogzone for RTL8125B 2.5GbE PCIe2.0 x1 NIC, Single RJ45 2.5GBASE-T Adapter
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