While 40Gb Ethernet is an emerging technology, there are many options. To increase the number of available 10Gb ports, use QSFP+ DAC Break Out Cables to split out each 40Gb port and connect up to four 10Gb SFP+ external ports.

Specification

Product
Product id	483837
Brand	Lenovo
Partnr	49Y7884
EAN/UPC code	2002247209008
Network
SFP transceiver type	SR
Technical details
Auto MDI/MDI-X	Y
Cable type	Multi-mode
Fiber cable diameters supported (core/cladding)	50/125, 62.5/125 µm
Performance
Maximum data transfer rate	40000 Mbit/s
Interface type	QSFP
Maximum transfer distance	150 m
Cabling technology	40GBASE-SR4
Harmonized System (HS) code	85369010
Features
Hot-Plug support	Y
Certification	MSA
Operational conditions
Operating temperature (T-T)	0 - 70 °C
Storage temperature (T-T)	-40 - 85 °C
Operating relative humidity (H-H)	10 - 80 procent
Storage relative humidity (H-H)	10 - 85 procent