Template:Button

Usage:

Xbox

 * A = XBox A.png
 * B = XBox B.png
 * X = XBox X.png
 * Y = XBox Y.png
 * LB = Xbox_LB.png
 * RB = Xbox_RB.png
 * white = XBox White.png
 * black = XBox Black.png
 * RT = Xbox RTrigger.png
 * LT = Xbox LTrigger.png
 * xboxleft = Xbox Left.png
 * xboxright = Xbox Right.png
 * xboxup = Xbox Up.png
 * xboxdown = Xbox Down.png
 * leftstick = Xbox_left_stick.png
 * rightstick = Xbox_right_stick.png
 * menu = XboxOne_Menu.png
 * windows = XboxOne_Windows.png
 * dpad = XboxOne_Dpad.png
 * back = 360_Back.png
 * xbstart = 360_Start.png

PlayStation

 * circle = PS3 Circle.png
 * cross = PS3 Cross.png
 * square = PS3 Square.png
 * triangle = PS3 Triangle.png
 * psup = PS3 Up.png
 * psdown = PS3 Down.png
 * psleft = PS3 Left.png
 * psright = PS3 Right.png
 * r1 = PS3 R1.png
 * r2 = PS3 R2.png
 * r3 = PS3 R3.png
 * l1 = PS3 L1.png
 * l2 = PS3 L2.png
 * l3 = PS3 L3.png
 * select = PS3 Select.png
 * psstart = PS3 Start.png
 * touchpad = PS4_Touch_Pad.png
 * options = PS4_Options.png
 * share = PS4_Share.png

Dreamcast

 * dca = DC A.png
 * dcb = DC B.png
 * dcx = DC X.png
 * dcy = DC Y.png
 * dcl = DC_L.png
 * dcr = DC_R.png
 * dcstart = DC Start.png
 * dcdpad = DC Dpad.png
 * dcleft = DC Left.png
 * dcright = DC Right.png
 * dcup = DC Up.png
 * dcdown = DC Down.png
 * dcanalog = DC_Analog.png
 * dcanalogleft = DC_Analog_Left.png
 * dcanalogright = DC_Analog_Right.png
 * dcanalogup = DC_Analog_Up.png
 * dcanalogdown = DC_Analog_Down.png

PlayStation Portable

 * pspa = PSP Circle.png
 * pspb = PSP Cross.png
 * pspx = PSP Square.png
 * pspy = PSP Triangle.png
 * pspl = PSP L.png
 * pspr = PSP R.png
 * pspselect = PSP Select.png
 * pspstart = PSP Start.png
 * pspdpad = PSP Dpad.png
 * pspup = PSP Up.png
 * pspdown = PSP Down.png
 * pspleft = PSP Left.png
 * pspright = PSP Right.png
 * pspanalog = PSP Analog.png

Game Boy Color

 * gbca = GBC A.png
 * gbcb = GBC B.png
 * gbcselect = GBC Select.png
 * gbcstart = GBC Start.png
 * gbcdpad = GBC Dpad.png
 * gbcup = GBC Up.png
 * gbcdown = GBC Down.png
 * gbcleft = GBC Left.png
 * gbcright = GBC Right.png

Game Boy Advance

 * gbaa = GBA A.png
 * gbab = GBA B.png
 * gbal = GBA L.png
 * gbar = GBA R.png
 * gbaselect = GBA Select.png
 * gbastart = GBA Start.png
 * gbadpad = GBA Dpad.png
 * gbaup = GBA Up.png
 * gbadown = GBA Down.png
 * gbaleft = GBA Left.png
 * gbaright = GBA Right.png

Nintendo DS

 * dsa = DS A.png
 * dsb = DS B.png
 * dsa = DS X.png
 * dsb = DS Y.png
 * dsselect = DS Select.png
 * dsstart = DS Start.png
 * dsdpad = DS Dpad.png
 * dsup = DS Up.png
 * dsdown = DS Down.png
 * dsleft = DS Left.png
 * dsright = DS Right.png
 * dstouch = DS Touch Screen.png
 * dsmic = DS Microphone.png

PC-Mouse

 * lmb = Keyboard_White_Mouse_Left.png
 * mmb = Keyboard_White_Mouse_Middle.png
 * rmb = Keyboard_White_Mouse_Right.png
 * mouse = Keyboard White Mouse Simple.png

PC-Keyboard

 * kbesc = Keyboard_White_Esc.png
 * kbf1 = Keyboard_White_F1.png
 * kbf2 = Keyboard_White_F2.png
 * kbf3 = Keyboard_White_F3.png
 * kbf4 = Keyboard_White_F4.png
 * kbf5 = Keyboard_White_F5.png
 * kbf6 = Keyboard_White_F6.png
 * kbf7 = Keyboard_White_F7.png
 * kbf8 = Keyboard_White_F8.png
 * kbf9 = Keyboard_White_F9.png
 * kbf10 = Keyboard_White_F10.png
 * kbf11 = Keyboard_White_F11.png
 * kbf12 = Keyboard_White_F12.png
 * kbtilde = Keyboard_White_Tilda.png
 * kb0 = Keyboard_White_0.png
 * kb1 = Keyboard_White_1.png
 * kb2 = Keyboard_White_2.png
 * kb3 = Keyboard_White_3.png
 * kb4 = Keyboard_White_4.png
 * kb5 = Keyboard_White_5.png
 * kb6 = Keyboard_White_6.png
 * kb7 = Keyboard_White_7.png
 * kb8 = Keyboard_White_8.png
 * kb9 = Keyboard_White_9.png
 * kbminus = Keyboard_White_Minus.png
 * kbplus = Keyboard_White_Plus.png
 * kbback = Keyboard_White_Backspace.png
 * kbbackspace = Keyboard_White_Backspace_Alt.png
 * kbtab = Keyboard_White_Tab.png
 * kbq = Keyboard_White_Q.png
 * kbw = Keyboard_White_W.png
 * kbe = Keyboard_White_E.png
 * kbr = Keyboard_White_R.png
 * kbt = Keyboard_White_T.png
 * kby = Keyboard_White_Y.png
 * kbu = Keyboard_White_U.png
 * kbi = Keyboard_White_I.png
 * kbo = Keyboard_White_O.png
 * kbp = Keyboard_White_P.png
 * kbbracketleft = Keyboard_White_Bracket_Left.png
 * kbbracketright = Keyboard_White_Bracket_Right.png
 * kbslash = Keyboard_White_Slash.png
 * kbcapslock = Keyboard_White_Caps_Lock.png
 * kba = Keyboard_White_A.png
 * kbs = Keyboard_White_S.png
 * kbd = Keyboard_White_D.png
 * kbf = Keyboard_White_F.png
 * kbg = Keyboard_White_G.png
 * kbh = Keyboard_White_H.png
 * knj = Keyboard_White_J.png
 * kbk = Keyboard_White_K.png
 * kbl = Keyboard_White_L.png
 * kbsemicolon = Keyboard_White_Semicolon.png
 * kbquote = Keyboard_White_Quote.png
 * kbenter = Keyboard_White_Enter.png
 * kbentersymbol = Keyboard_White_Enter_Alt.png
 * kblshift = Keyboard_White_Shift.png
 * kbz = Keyboard_White_Z.png
 * kbx = Keyboard_White_X.png
 * kbc = Keyboard_White_C.png
 * kbv = Keyboard_White_V.png
 * kbb = Keyboard_White_B.png
 * kbn = Keyboard_White_N.png
 * kbm = Keyboard_White_M.png
 * kbless = Keyboard_White_Mark_Left.png
 * kbgreather = Keyboard_White_Mark_Right.png
 * kbquestion = Keyboard_White_Question.png
 * kbrshift = Keyboard_White_Shift_Alt.png
 * kbctrl = Keyboard_White_Ctrl.png
 * kbwindows = Keyboard_White_Win.png
 * kbcommand = Keyboard_White_Command.png
 * kbalt = Keyboard_White_Alt.png
 * kbspace = Keyboard_White_Space.png
 * kblongspace = Keyboard_White_Space_Long.png
 * kbprintscr = Keyboard_White_Print_Screen.png
 * kbinsert = Keyboard_White_Insert.png
 * kbhome = Keyboard_White_Home.png
 * kbpageup = Keyboard_White_Page_Up.png
 * kbdel = Keyboard_White_Del.png
 * kbend = Keyboard_White_End.png
 * kbpagedown = Keyboard_White_Page_Down.png
 * kbarrowdown = Keyboard_White_Arrow_Down.png
 * kbarrowleft = Keyboard_White_Arrow_Left.png
 * kbarrowright = Keyboard_White_Arrow_Right.png
 * kbarrowup = Keyboard_White_Arrow_Up.png
 * kbnumlock = Keyboard_White_Num_Lock.png
 * kbasterisk = Keyboard_White_Asterisk.png
 * kbplusnumpad = Keyboard_White_Plus_Tall.png
 * kbenternumpad = Keyboard_White_Enter_Tall.png

Credits
Some icons sourced from Xelu's FREE Keyboard and controllers prompts pack