The description reads "PCI Express* 2.0. 2.5 GT/s x 1 Lane". However PCI Express 2.0 x1 lane is 5GT/s. So I suspect the card is actually PCI Express 1.0. Can someone clarify?

Name: 10Gtek 10/100/1000Mbps Gigabit Ethernet Converged Network Adapter with Intel 82576 Chip | Ethernet PCI Express Network Card | Dual RJ45 Copper Ports | PCI Express 2.0 X1 | Compare to Intel E1G42ET
Uploaded: 2026-05-04
Description: 10Gtek 10/100/1000Mbps Gigabit Ethernet Converged Network Adapter with Intel 82576 Chip | Ethernet PCI Express Network Card | Dual RJ45 Copper Ports | PCI Express 2.0 X1 | Compare to Intel E1G42ET

This item is listed by one of Newegg's Marketplace sellers. I would recommend reaching out to 10Gtek through their seller profile for additional information. You may see their contact info by clicking on their name above the add to cart button.

10Gtek 10/100/1000Mbps Gigabit Ethernet Converged Network Adapter with Intel 82576 Chip | Ethernet PCI Express Network Card | Dual RJ45 Copper Ports | PCI Express 2.0 X1

10Gtek 10/100/1000Mbps Gigabit Ethernet Converged Network Adapter with Intel 82576 Chip | Ethernet PCI Express Network Card | Dual RJ45 Copper Ports | PCI Express 2.0 X1 | Compare to Intel E1G42ET

Equipped with original Intel 82576 controller chip which supports Intelligent Offloads and make the servers more stable. Compare to Intel E1G42ET.
Compatible with Windows Server 2003/ 2008/ 2012, Windows7/8/10/Visa/XP, Linux, VMware ESX. (Does not support VMware ESXi 7.0 or above.)
Dual copper RJ45 ports let you connect to Category-5 and up to 100m for meeting the demands of data center environments. PCI Express* 2.0. 2.5 GT/s X1 Lane.
You also can download it from Intel website. With profile bracket and additional low profile bracket that makes it easy to install the card in a small form factor/low profile computer case/server.NOT support hot swaping.
What You Get: 10Gtek 82576-2T-X1 1.25GbE PCI-E X1 Network Card (compare to Intel E1G42ET) x1, Low-profile Bracket x1. Backed by 10Gtek 30 Days Free-returned and Lifetime Technology Support.

Products	82571-GE-2T-X1	82574-GE-1T-X1	82576-GE-2T-X1	I210-GE-1T-X1	I350-GE-4T-X4
Replacement for	-	EXPI9301CTBLK	E1G42ET	I210-T1	I350-T4
Controller	82571	82574L	82576EB	I210AT	I350-AM4
Port Configure	(2x) RJ-45	(1x) RJ-45	(2x) RJ-45	(1x) RJ-45	(4x) RJ-45
System Interface Type	PCIe X1	PCIe X1	PCIe X1	PCIe X1	PCIe X4
WOL	X	X	Yes	Yes	Yes
SR - IOV	X	X	Yes	X	Yes
Jumbo Frames	Yes , up to 9.5KB	Yes , up to 9KB	Yes , up to 9.5KB	Yes , up to 9.5KB	Yes , up to 9.5KB
Operating Systems	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 5/6/7, SLSE 11/12	Windows XP/7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 5/6/7, SLSE 11/12	Windows XP/7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 5/6, SLSE 11/12	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 5/6/7, SLSE 11/12	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 5/6/7, SLSE 11/12
Unsupported Note	Windows XP, Mac OS, Bypass Mode	Mac OS, Bypass Mode	Vmware Esxi 7.0, Mac OS, Bypass Mode	Windows XP, Mac OS, Bypass Mode	Mac OS, Bypass Mode
Windows 10 Teaming	Yes	X	X	Yes	Yes

Products	X520-10G-1S-X8	X520-10G-2S-X8	X540-10G-1T-X8	X540-10G-2T-X8	X550-10G-1T-X4	X550-10G-2T-X4
Replacement for	X520-DA1	X520-DA2	X540-T1	X540-T2	X550-T1	X550-T2
Controller	82599EN	82599ES	X540-AT2	X540-AT2	Intel X550-AT	Intel X550-AT2
Port Configure	(1x) SFP+	(2x) SFP+	(1x) RJ-45	(2x) RJ-45	(1x) RJ-45	(2x) RJ-45
System Interface Type	PCIe X8	PCIe X8	PCIe X8	PCIe X8	PCIe X4	PCIe X4
WOL	X	X	X	X	X	X
SR - IOV	Yes	Yes	Yes	Yes	Yes	Yes
Jumbo Frames	Yes , up to 15.5KB	Yes , up to 15.5KB	Yes, Up to 15.5KB	Yes, Up to 15.5KB	Yes, Up to 15.5KB	Yes, Up to 15.5KB
Operating Systems	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 6/7, SLSE 11/12	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 6/7, SLSE 11/12	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 6/7, SLSE 11/12	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 6/7, SLSE 11/12	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 6/7, SLSE 11/12	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 6/7, SLSE 11/12
Unsupported Note	Windows os is not support SFP-LX, QNAP QSW-308-Series Switch, Mac OS, Bypass Mode	Windows os is not support SFP-LX, QNAP QSW-308-Series Switch, Mac OS, Bypass Mode	Mac OS, Bypass Mode	Mac OS, Bypass Mode	Mac OS, Bypass Mode	Mac OS, Bypass Mode
Windows 10 Teaming	Yes	Yes	-	Yes	-	Yes

Products	X710-10G-2S-X8	XL710-10G-4S-X8
Replacement for	X710-DA2	X710-DA4
Controller	X710-BM2	XL710-BM1
Port Configure	(2x) SFP+	(4x) SFP+
System Interface Type	PCIe X8	PCIe X8
WOL	X	X
SR - IOV	Yes	Yes
Jumbo Frames	Yes , up to 9.5KB	Yes , up to 9.5KB
Operating Systems	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 6/7, SLSE 11/12	Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11, FreeBSD 10/11/12, Vmware Esxi 6/7, SLSE 11/12
Unsupported Note	Mac OS, Bypass Mode	Mac OS, Bypass Mode
Windows 10 Teaming	Yes	Yes