Part J4908A is compatible in the following Models:

HPE ProCurve 4100gl Switch series

ProCurve Switch 4108GL Bundle - J4861A
ProCurve Switch 4108GL - J4865A
ProCurve Switch 4104GL - J4887A
ProCurve Switch 4148GL - J4888A
ProCurve Switch 4140GL - J8151A
ProCurve Switch 4160GL - J8152A

HPE Switch Gigabit Copper Modules

ProCurve Switch GL 10/100/1000 Module - J4908A