Q: Does the Lekuo PR27R11 PCIe 10G network card require a driver?
✅ Yes, drivers are required for both Windows and Linux systems. Windows users can download the latest RTL8127 driver from our support page(https://lekuo.com/uploadfile/upload///data/upload/image/RTL8127.zip). Linux users with Kernel 5.9+ have built-in RTL8127 support.
Q: What PCIe slot does the PR27R11 network card use?
✅ The Lekuo PR27R11 uses a PCIe Gen4 x1 interface and is backward compatible with PCIe Gen3/Gen2 slots. It can be installed in any x1, x4, x8, or x16 PCIe slot on your motherboard.
Q: What Ethernet cable is required for 10Gbps speeds?
✅ For full 10 Gigabit performance, use Cat6A or Cat7 Ethernet cables (up to 100 meters). Cat6 cables support 10Gbps up to 55 meters. Cat5e cables only support 1Gbps maximum.
Q: How much power does the PR27R11 consume?
✅ The Lekuo PR27R11 is extremely power-efficient: • 10G mode: 1.79W (typical) • 5G mode: 1.37W • 2.5G mode: 1.21W • 1G mode: 0.92W This is 40% lower than Intel X550-based 10G cards, making it ideal for always-on servers and NAS systems.
Q: Is the PR27R11 compatible with low-profile (SFF) PC cases?
✅ Yes! The Lekuo PR27R11 includes a low-profile bracket in the package, making it compatible with small form factor (SFF) PCs, mini-ITX cases, and 1U/2U rackmount servers.
Q: Does the RTL8127 network card support Jumbo Frames?
✅ Yes, the PR27R11 supports Jumbo Frames up to 16KB (16,000 bytes). This feature is particularly useful for NAS storage, video editing workflows, and large file transfers, reducing CPU overhead and improving throughput.
Q: Can I use the PR27R11 with a 2.5G or 5G network?
✅ Absolutely! The RTL8127 chipset supports multi-gigabit speeds: 10G, 5G, 2.5G, 1G, and 100Mbps. It will auto-negotiate to match your switch/router speed, making it future-proof for network upgrades.
Q: What operating systems are supported?
✅ The Lekuo PR27R11 is compatible with: • Windows 10 (64-bit) and Windows 11 • Linux Kernel 2.4.x, 2.6.x, and newer (built-in support in Kernel 5.9+) • VMware ESXi (with community drivers) • Proxmox VE, TrueNAS, Unraid
Q: Why is my 10G network card only showing 1Gbps speed?
✅ ✅ Common causes: 1. Check if you're using a Cat6A/Cat7 cable (Cat5e maxes out at 1Gbps) 2. Verify your switch/router supports 10G (most consumer routers are 1G only) 3. Ensure the driver is installed and updated 4. In Windows: Device Manager → Network Adapters → RTL8127 → Properties → Advanced → Speed & Duplex → Set to "10Gbps Full Duplex"
Q: Does the PR27R11 support Wake-On-LAN (WOL)?
✅ Yes, the Lekuo PR27R11 fully supports Wake-On-LAN functionality. You can remotely power on your PC/server over the network. Make sure to enable WOL in your BIOS settings and network adapter properties.