This auction is for One Brocade XBR-000275 (1-Pack) 57-1000351-01 4x32 GFC SWL QSFP28 Fiber Channel Optical Transceiver. It is 100% Brocade Original. It is 850nm Short Wave Length and can reach 100m. 4x32 and 4x16 Gbps Breakout are supported. 
Second Generation. It has an MPO 1x12 connector and can be used in Brocade X6 Director ICL, ISL and G630 and G620 Switches. It can also be used in the OEM versions of the X6 and switches by IBM, HP, SUN and others. AKA HP Q2R27A & 881754-001 .

Model:          XBR-000275 57-1000351-01, AKA HP Q2R27A & 881754-001
Speed:         128 and 64Gbps Multirate, 4x32GFC
Type:            QSFP28 (Quad Small Form Pluggable)
Distance:     100 Meters SW - Short Wave Length
Protocol:      128 GFC Fiber Channel standard FC-PI-6P
Condition:    Tested, in Excellent Condition
Warranty:     30 day
Manuf Spec: http://www.brocade.com/products/all/transceivers/product-details/transceiver-modules/index.page

Guaranteed in Excellent Working Condition

Brocade 4×32 GFC SWL QSFP28 modules are hot-swappable, low-voltage (3.3 V) digital diagnostic optical transceivers that support high-speed serial links over multimode optical fiber at signaling rates up to 4*28.05 Gbps. They comply with the 128 GFC Fiber Channel standard FC-PI-6P and QSFP MSA mechanical specification (SFF-8661).