hi, one chip of 512M DDR momory needed, 4 W( E0 s6 k; U2 L ! H+ ]% R$ j, nPC 2100-PC3200, : w; g/ Y8 J2 I+ j , J+ F9 s8 D) c- x6 o' iif you have one for sale , please reply this messege, send msg to this account , or call 4863758 , p* g+ J) A" E. V7 @ 1 x: n* T8 l% w! C' p1 s1 Ithanks!!!