HP CM3530 - Manual (Page 119)

5. The control panel prompts you to set the paper size and type. Select the Custom setting, and then
configure the X and Y dimensions of the custom paper size.
HP LaserJet
DDMMYYYY 00.00 AM
NOTE: See the label in the paper tray, or the following illustration, to determine the X and Y
dimensions.
Y
X
ENWW Load paper and print media 105