Dell XPS 8500 (Early 2012) - Manual (Page 4)

Expansion bus
PCI-Express x1 three 36-pin connectors
PCI-Express x16 one 164-pin connector
PCI-Express mini-card one 52-pin connector
Media-card reader
Cards supported • CF Type I and II
• Micro drive
• SD
• Mini SD
• SDHC Class 2, 4, and 6
• MMC
• MMC mobile
• MMC plug
• RS-MMC
• SMC
• xD
• MS
• MS Pro
• MS Pro Duo
• MS Duo
• MS Pro-HG (4 bit mode)
Power port
Input voltage 100-240 VAC
Input frequency 50 Hz-60 Hz
Rated input current 8.0 A/4.0 A