Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//etc/sane.d/rts8891.conf

 # rts8891.conf: Configuration file for the rts8891 backend

# MODEL
# HP scanjet 4400c
usb 0x03f0 0x0705
# HP scanjet 4470c
usb 0x03f0 0x0805
# UMAX Astra 4400/4450
usb 0x1606 0x0070