Hi,
the standard SFP+ slot is 1/10G. You can insert SFP to SFP+ slot. Standard SFP+ transceiver is 10G only. So if you connect SR transceiver (10G) to SX transciever (1G) it will
not work.
There are dual speed SFP+ transceivers on the market = can operate on 10G and 1G based on the transceiver on the other side.
from Extreme PriceFile:
10GB-SRSX-SFPP = 10GB / 1GB DUAL RATE, MM 850nm 10GBASE-SR / 1000BASE-SX, LC SFP+
the 10GB-SRSX-SFPP is
not supported on X460 platform.
based on datasheet:
These four SFP+ ports can support both 10 Gigabit Ethernet SFP+ transceivers and Gigabit Ethernet transceivers.
I do not expect issues if you insert P/N: 10051 (1000BASE-SX SFP, LC Connector) to the P/N: 16120 (XGM3SB-4sf/module).
regards
Zdenek
Regards
Zdeněk Pala