The DS50U XPC slim is a fanless barebone PC with a robust metal chassis and exceptional connectivity. It's approved for 24/7 continuous operation and thanks to its compact dimensions is ideal to run professional applications such as digital signage, POS, kiosk, Office and multimedia. Optional components: - Compatible with Windows 10/11 (64-bit) and Linux (64-bit) - Supports one Serial ATA hard drive or one 2.5" format SATA SSD - Supports DDR5-4800 (PC5-38400) SDRAM with 1.1 V - Supports max. 32 GB per slot, total capacity of 64 GB This product comes with two M.2-2280 Key-M slots - Comes with an M.2-2230 Type E slot and two pre-installed antenna cables For WLAN, a WLAN M.2-2230 format expansion card and two WLAN antenna are required. Please note: Please get in touch with us if you are interested in a custom configuration.