[1] HP Workpath Apps – certain devices may require 2 GB DIMM Accessory, E5K49A (LaserJet: E50045, E55040, E65150, E65160; MFP: M572, M577, M631, M632, M633, M681, M682, M776dn/M776zs/M776z, E52545, E57540, E62555, E62565, E62575, E62655, E62665, E62675, E67550, E67560, E67650, E67660; PageWide: 755, E75160, 586, 774, 779, E58650, E77650-E77660, P75250, P77440, P77940, P77950, P77960; Scanners: 8500 fn1/fn2, N9120