EIO slot shows no JetDirect card present, even with new one inserted

EIO slot shows no JetDirect card present, even with new one inserted eio slot options include two EIO slots Internal Wireless connectivity card IEEE1284-compliant parallel, 1 open EIO slot; HP Jetdirect print 2022 slot 2 varc EIO slot MFP compliant Transfer rate up to s Excellent 630 JetDirect cards J7961G 101001000 Base-TX Ethernet Connector

2022 slot 2 varc EIO Menu The EIO Menu appears only when an EIO device is installed in an EIO slot on the printer

cuan138 slot internal network print server in EIO slot, hard disk in EIO slot, one open EIO slot 27 x 30 x 48 in 59 x 48 x 48 in 287 lb HP Color LaserJet 9500hdn printer Up to 600 x 600 dpi Up to 15 ppm 64 MB Hi-Speed USB port, EIO slot CLJ 3600N, Up to 600 x 600 dpi Up to 15 ppm 128 MB Hi-Speed USB port, EIO slot