HP LaserJet 1320 - Manual (Page 141)

Port availability
USB Compatible with USB 2.0 specifications
Network
(HP LaserJet 1320n, HP LaserJet 1320tn, and
HP LaserJet 1320nw printers only)
RJ-45, Ethernet 10/100
Wireless
(HP LaserJet 1320nw printer only)
802.11b/g
Parallel
(HP LaserJet 1160 and HP LaserJet 1320
printers only)
● IEEE-1284B receptacle
● Set host computer to ECP
ENWW Port availability 131