HP laserjet m1212nf - Manual (Page 58)

Link speeds and duplex settings
NOTE: In this section duplex refers to bi-directional communication, not two-sided printing.
Use the Networking tab in the embedded Web server to set the link speed if necessary.
Incorrect changes to the link speed setting might prevent the product from communicating with other
network devices. For most situations, leave the product in automatic mode. Changes can cause the
product to turn off, and then on. Make changes only when the product is idle.
44 Chapter 5 Connect the product ENWW