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Model: LE8127T1(X1)
Why doesn't my card reach full 10Gbps?
Full 10G needs a PCIe 4.0 slot and the latest Realtek driver; a Gen3 x1 lane caps near 8Gbps.
Does it work with ESXi or Proxmox?
Proxmox and current Linux kernels run natively; ESXi has no official driver, community builds only.
Is macOS supported?
Realtek offers no official macOS driver for this card, so we do not recommend Mac systems.
What Ethernet cable should I use?
Cat6a or better for stable 10G; Cat6 works at shorter distances.
Will it fit my slim desktop or ITX case?
Yes — standard and low-profile brackets are both included in the box.
1Gbps Gigabit Ethernet
Aluminum Heatsink
Dual Brackets Included
2.5Gbps Multi-Gig Ethernet
Backward Compatible: 2.5G / 1G / 100M
PCIe x1, Low-Profile Bracket Included
10Gbps Single-Port RJ45
PCIe 4.0 x1
Wake-on-LAN / Jumbo Frame Support
NIC with Realtek Chip
10/25/100G NIC with Intel Chip
RDMA NIC with ConnectX Chip
NIC with Broadcom Chip
OCP 3.0 NIC
PoE+ Network Card
Model: LE8127T1(X1)
| Controller | Realtek RTL8127 |
|---|---|
| Host Bus Interface | PCIe 4.0 x1 |
| Transfer Speed | 10G / 5G / 2.5G / 1G / 100MbE auto-negotiation |
| Network Standards | 10GBASE-T / 5GBASE-T / 2.5GBASE-T / 1000BASE-T / 100BASE-TX |
| Port | 1 x RJ45 (10GBASE-T copper) |
| Jumbo Frame | Supported |
| Wake-on-LAN (WoL) | Supported |
| PXE Boot | UEFI & Legacy BIOS |
| Flow Control | IEEE 802.3x |
| Heatsink | Aluminum fin heatsink over controller (as pictured) |
| Brackets | Standard + low-profile, both included |
| Power | Bus-powered; no auxiliary power connector |
| LED Indicators | Link/activity LED at RJ45 port |
| Features | UEFI Mode and Legacy BIOS Mode PXE Boot, WOL (Wake on LAN) |
| OS Support | Windows 11/10, Linux (latest kernels) |
| In the Box | 1 x Network card, 1 x Low-profile bracket |
Why doesn't my card reach full 10Gbps?
Full 10G needs a PCIe 4.0 slot and the latest Realtek driver; a Gen3 x1 lane caps near 8Gbps.
Does it work with ESXi or Proxmox?
Proxmox and current Linux kernels run natively; ESXi has no official driver, community builds only.
Is macOS supported?
Realtek offers no official macOS driver for this card, so we do not recommend Mac systems.
What Ethernet cable should I use?
Cat6a or better for stable 10G; Cat6 works at shorter distances.
Will it fit my slim desktop or ITX case?
Yes — standard and low-profile brackets are both included in the box.
1Gbps Gigabit Ethernet
Aluminum Heatsink
Dual Brackets Included
2.5Gbps Multi-Gig Ethernet
Backward Compatible: 2.5G / 1G / 100M
PCIe x1, Low-Profile Bracket Included
10Gbps Single-Port RJ45
PCIe 4.0 x1
Wake-on-LAN / Jumbo Frame Support
NIC with Realtek Chip
10/25/100G NIC with Intel Chip
RDMA NIC with ConnectX Chip
NIC with Broadcom Chip
OCP 3.0 NIC
PoE+ Network Card