... (Acer)* 5.5x3.3x1.3mm(Samsung)* 4.8x1.7mm (hp/Compaq)* 7.9x5.5x1mm(IBM/Lenovo)* 7.4x5.0x0.6mm(DELL ... you need. Item compatible with most notebook, Including Dell, HP, Compaq, Sony, Toshiba, IBM/Lenovo, Asus, Fujitsu, Gateway, Panasonic, Samsung and ... , C400, C500, C510, C600, C610, C640, C800, C810 and C840 )* Compaq (Armada, LTE, Evo, Presario, Prosignia, Tablet) Package included:1* HL-UND90 ...