Mellanox Technologies MCX4131A-BCAT CONNECTX-4 LX EN NIC 4056 GBE
Data Link Protocol 40 Gigabit LAN. - 40 Gigabit QSFP. Ports 40 Gigabit QSFP. If you order from outside of USA, You will be responsible for any issues with the order. 802.1Qaz, IEEE 802.1Qau, IEEE 802.1Qbg, IEEE 1588v2.