10GB Hard Disk Drive
By installing the HD-40CL, you can reduce the time taken to print multiple copies of documents.
The HD-40CL is not compatible with the HD-EX, it is a completely different HDD solution.
Brother HD-40CL, 10 GB, 2.5", Ultra-ATA/133
Brother HD-40CL. Hard drive capacity: 10 GB, Hard drive size: 2.5", Host interface: Ultra-ATA/133