Ricoh Aficio MP 161SPF - Manual (Page 130)

Printer Features
122
5
❖ RAM Disk
You can specify how much data the RAM disk can hold. If you do not want
to use the RAM disk, select [0 MB]. This setting does not appear if the function
upgrade option is installed.
The default setting is 4 MB.
Note
❒ Setting of [Bypass Tray Priority] is for bypass tray only.
Reference
p.4 “Accessing User Tools”
"Loading Paper", Troubleshooting