SQUARE Users--This model has been tested with SQUARE and works GREAT. Your printer must be a network printer (Ethernet or WiFi) however in order to communicate with SQUARE over the iPad WiFi. The same printer cable-to-drawer requirements apply from there for auto-open.Size:  16.2 in. X 16.3 in.  -Shipped as 19x19x8 18lb BoxDrawer Front Style:  Black Painted Front, Dual Media SlotsInterface Type:  MultiPRO 320 Interface for all 24V printers and terminals  -CABLE SOLD SEPARATE (Most Common Are CD014A for STAR Printers and CD005A for EPSON Printers)Color:  Black Body and Black Drawer FaceTill:  Fixed Bill and Coin Area, Plastic Bill Hold-Downs (5 bill slots, 5 coin slots) Standard