Lexmark X850e User Guide

We recommend using the following tested and approved USB flash memory devices in the 256 MB, 512 MB, and 1 GB 
sizes:

Lexar JumpDrive 2.0 Pro

SanDisk Cruzer Mini

Other USB flash memory devices must:

Be compatible with the USB 2.0 standard.

Support the Full-Speed standard as well. 

Devices only supporting USB low speed capabilities are not supported.

Use the FAT file system.

Devices formatted with NTFS or any other file systems are not supported.

To print from a USB flash memory device:

Make sure the MFP is on and 

 or 

 appears.

Insert a USB flash memory device into the USB Direct interface.

Note: If you insert the memory device when the MFP requires attention such as when a paper jam has 

occurred, the MFP ignores the memory device. 

Touch the arrow next to the document you want to print.

A screen asking the number of copies to be printed will appear.

To print only one copy, touch Print, or touch + to enter the number of copies.

Note: Do not remove the USB flash memory device from the USB Direct interface until the document has 

finished printing.

The document will begin printing.

Note: If you insert the memory device when the MFP is busy printing other jobs, the message 

 appears. Select Continue, and your job prints after the other jobs finish.