https://support.lenovo.com/au/en/downloads/ds001190-realtek-rts5159-card-reader-driver-for-windows-7-32-bit-and-64-bit-and-xp-thinkcentre-m90z
Realtek RTS5159 Card Reader Driver for Windows 7 (32-bit and 64-bit) and XP - ThinkCentre M90z -...
This package installs the Realtek RTS5159 Card Reader Driver for Windows 7 (32-bit and 64-bit) and XP on ThinkCentre M90z systems.