From Asus web site: 
http://support.asus.com/cpusupport/...&m=M2N68-AM SE2&os=&hashedid=rzWjxRHTivB96wPd
That should be 
M2N68=AM-SE2
M2N68-AM SE2 The following table shows the supported CPUs for this motherboard
CPU 	Since PCB 	Since BIOS 	Note
Athlon 64 LE-1600+ (DH),1M,rev.F3,45W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 LE-1620+ (DH),1M,rev.F3,45W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 LE-1640+ (DH),1M,rev.F3,45W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 LE-1640+ (DP),512K,rev.G2,45W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 LE-1660+ (DP),512K,rev.G2,45W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 3600+ (DD),1MB,65W,rev.G,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 3800+ (CU),512Kx2,65W,rev.F2,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 4000+ (DD),1MB,rev.G,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 4200+ (DD),512Kx2,rev.G1,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 4200+ (DO),512Kx2,rev.G2,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 4400+ (DD),1MB,rev.G,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 4400+ (DO),1MB,rev.G2,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 4400+ (DU),1MB,rev.G2,65W,SocketAM2,ADO4400IAA5DU 	2.00G 	
0206 	
	  
Athlon 64 X2 4600+ (DO),1M,rev.G2,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 4800+ (DD),1MB,rev.G,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 4800+ (DO),1MB,rev.G2,65W,SocketAM2 	2.00G 	
	
	  
Athlon 64 X2 5000+ (DD),1MB,rev.G,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 5000+ (DO),1MB,rev.G2,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 5000+ (DS),1MB,rev.G2,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 5200+ (DD),1MB,rev.G,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 5200+ (DO),1MB,rev.G2,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 5400+ (DO),1M,rev.G2,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 5400+ (DS),1M,rev.G2,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 5600+ (CZ),2MB,rev.F3,89W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 5600+ (DO),2MB,rev.G2,89W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 5800+ (DO),2MB,rev.G2,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 6000+ (CZ),2MB,rev.F3,89W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 6000+ (DO),1MB,rev.G2,89W,SocketAM2 	2.00G 	
0206 	
	  
Athlon 64 X2 6500+ ,2.3GHz,1MB,rev.B3,AD6500WCJ2BGH,95W,SocketAM2 	2.00G 	
0206 	
	  
Athlon IIX2 215(ADX215OCK22GQ),2.7GHz,512KB,rev.C2,65W,SocketAM3 	2.00G 	
0706 	
	  
Athlon IIX2 225(ADX225OCK22GM),2.9GHz,512KB,rev.C3,65W,SocketAM3 	ALL 	
1801 	
	  
Athlon IIX2 235e(AD235EHDK23GQ),2.7GHz,1MB,rev.C2,45W,SocketAM3 	2.00G 	
0704 	
	  
Athlon IIX2 240(ADX240OCK23GQ),2.8GHz,1MB,rev.C2,65W,SocketAM3 	2.00G 	
0701 	
	  
Athlon IIX2 240e(AD240EHDK23GM),2.8GHz,1MB,rev.C3,45W,SocketAM3 	ALL 	
1103 	
	  
Athlon IIX2 240e(AD240EHDK23GQ),2.8GHz,1MB,rev.C2,45W,SocketAM3 	2.00G 	
0704 	
	  
Athlon IIX2 245(ADX245OCK23GM),2.9GHz,1MB,rev.C2,65W,SocketAM3 	ALL 	
0703 	
	  
Athlon IIX2 245(ADX245OCK23GQ),2.9GHz,1MB,rev.C2,65W,SocketAM3 	2.00G 	
0701 	
	  
Athlon IIX2 245e(AD245EHDK23GM),2.9GHz,1MB,rev.C3,45W,SocketAM3 	ALL 	
1103 	
	  
Athlon IIX2 250(ADX250OCK23GM),3.0GHz,1MB,rev.C3,65W,SocketAM3 	ALL 	
0703 	
	  
Athlon IIX2 250(ADX250OCK23GQ),3.0GHz,1MB,rev.C2,65W,SocketAM3 	2.00G 	
0701 	
	  
Athlon IIX2 250e(AD250EHDK23GM),3.0GHz,1MB,rev.C3,45W,SocketAM3 	ALL 	
1103 	
	  
Athlon IIX2 255(ADX255OCK23GM),3.1GHz,512KB,rev.C3,65W,SocketAM3 	ALL 	
0703 	
	  
Athlon IIX2 255(ADX255OCK23GQ),3.1GHz,1MB,rev.C2,65W,SocketAM3 	ALL 	
0706 	
	  
Athlon IIX2 260(ADX260OCK23GM),3.2GHz,1MB,rev.C3,65W,SocketAM3 	ALL 	
1407 	
	  
Athlon IIX2 265(ADX265OCK23GM),3.3GHz,1MB,rev.C3,65W,SocketAM3 	ALL 	
1801 	
	  
Athlon IIX2 270(ADX270OCK23GM),3.4GHz,1MB,rev.C3,65W,SocketAM3 	ALL 	
1801 	
	  
Athlon IIX3 400e(AD400EHDK32GI),2.2GHz,512KB,rev.C2,45W,SocketAM3 	2.00G 	
0701 	
	  
Athlon IIX3 405e(AD405EHDK32GI),2.3GHz,512KB,rev.C2,45W,SocketAM3 	2.00G 	
0701 	
	  
Athlon IIX3 405e(AD405EHDK32GM),2.3GHz,512KB,rev.C3,45W,SocketAM3 	ALL 	
0703 	
	  
Athlon IIX3 420e(AD420EHDK32GM),2.6GHz,512KB,rev.C3,45W,SocketAM3 	ALL 	
1801 	
	  
Athlon IIX3 425( ADX425WFK32GI),2.7GHz,512KB,rev.C2,95W,SocketAM3 	2.00G 	
0706 	
	  
Athlon IIX3 435( ADX435WFK32GI),2.9GHz,512KB,rev.C2,95W,SocketAM3 	2.00G 	
0706 	
	  
Athlon IIX3 435( ADX435WFK32GM),2.9GHz,512KB,rev.C3,95W,SocketAM3 	ALL 	
1002 	
	  
Athlon IIX3 440( ADX440WFK32GI),3.0GHz,512KB,rev.C2,95W,SocketAM3 	ALL 	
1002 	
	  
Athlon IIX3 440( ADX440WFK32GM),3.0GHz,512KB,rev.C3,95W,SocketAM3 	ALL 	
1002 	
	  
Athlon IIX3 445( ADX445WFK32GM),3.1GHz,512KB,rev.C3,95W,SocketAM3 	ALL 	
1102 	
	  
Athlon IIX3 450(ADX450WFK32GM),3.2GHz,512KB,rev.C3,95W,SocketAM3 	ALL 	
1801 	
	  
Athlon IIX3 455(ADX455WFK32GM),3.3GHz,512KB,rev.C3,95W,SocketAM3 	ALL 	
1801 	
	  
Athlon IIX4 600e(AD600EHDK42GI),2.2GHz,512KB,rev.C2,45W,SocketAM3 	2.00G 	
0502 	
	  
Athlon IIX4 605e(AD605EHDK42GI),2.3GHz,512KB,rev.C2,45W,SocketAM3 	2.00G 	
0502 	
	  
Athlon IIX4 605e(AD605EHDK42GM),2.3GHz,512KB,rev.C3,45W,SocketAM3 	ALL 	
0703 	
	  
Athlon IIX4 610e(AD610EHDK42GM),2.4GHz,512KB,rev.C3,45W,SocketAM3 	ALL 	
1103 	
	  
Athlon IIX4 615e(AD615EHDK42GM),2.5GHz,512KB,rev.C3,45W,SocketAM3 	ALL 	
1801 	
	  
Athlon IIX4 620(ADX620WFK42GI),2.6GHz,512KB,rev.C2,95W,SocketAM3 	2.00G 	
0704 	
	  
Athlon IIX4 630(ADX630WFK42GI),2.8GHz,512KB,rev.C3,95W,SocketAM3 	2.00G 	
0704 	
	  
Athlon IIX4 630(ADX630WFK42GM),2.8GHz,512KB,rev.C3,95W,SocketAM3 	ALL 	
1002 	
	  
Athlon IIX4 635(ADX635WFK42GI),2.9GHz,512KB,rev.C2,95W,SocketAM3 	ALL 	
1002 	
	  
Athlon IIX4 635(ADX635WFK42GM),2.9GHz,512KB,rev.C3,95W,SocketAM3 	ALL 	
1002 	
	  
Athlon IIX4 640(ADX640WFK42GM),3.0GHz,512KB,rev.C3,95W,SocketAM3 	ALL 	
1002 	
	  
Athlon IIX4 645(ADX645WFK42GM),3.1GHz,512KB,rev.C3,95W,SocketAM3 	ALL 	
1801 	
	  
Athlon IIX4 650(ADX650WFK42GM),3.2GHz,512KB,rev.C3,95W,SocketAM3 	ALL 	
1801 	
	  
Athlon X2 4050e (DO),1M,rev.G2,45W,SocketAM2 	2.00G 	
0206 	
	  
Athlon X2 4450e (DO),1M,rev.G2,45W,SocketAM2 	2.00G 	
0206 	
	  
Athlon X2 4850e (DO),1M,rev.G2,45W,SocketAM2 	2.00G 	
0206 	
	  
Athlon X2 5000+ (DU),1MB,rev.G2,65W,SocketAM2 	2.00G 	
0206 	
	  
Athlon X2 5000+(GI),2.2GHz,1MB,rev.C2,65W,AD5000ODJ22GI,SocketAM2+ 	2.00G 	
0901 	
	  
Athlon X2 5000+(GI),2.2GHz,1MB,rev.C2,65W,AD5000OGJ22GI,SocketAM2+ 	ALL 	
1101 	
	  
Athlon X2 5050e (DO),1MB,rev.G2,45W,ADH5050IAA5DO,SocketAM2 	2.00G 	
0206 	
	  
Athlon X2 7450+ ,2.4GHz,2MB,rev.B3,AD7450WCJ2BGH,95W,SocketAM2+ 	2.00G 	
0206 	
	  
Athlon X2 7550+ ,2.5GHz,2MB,rev.B3,AD7550WCJ2BGH,95W,SocketAM2+ 	2.00G 	
0206 	
	  
Athlon X2 7750+ ,2.7GHz,2MB,rev.B3,AD7750WCJ2BGH,95W,SocketAM2+ 	2.00G 	
0405 	
	  
Athlon X2 7750+ ,2.7GHz,2MB,rev.B3,AD775ZWCJ2BGH,95W,SocketAM2+ 	2.00G 	
0206 	
	  
Athlon X2 7850+ ,2.8GHz,2MB,rev.B3,AD785ZWCJ2BGH,95W,SocketAM2+ 	2.00G 	
0405 	
	  
Athlon X2 BE-2300 (DD),1M,45W,rev.G1,SocketAM2 	2.00G 	
0206 	
	  
Athlon X2 BE-2300 (DO),1M,45W,rev.G2,SocketAM2 	2.00G 	
0206 	
	  
Athlon X2 BE-2350 (DD),1M,45W,rev.G1,SocketAM2 	2.00G 	
0206 	
	  
Athlon X2 BE-2350 (DO),1M,45W,rev.G2,SocketAM2 	2.00G 	
0206 	
	  
Athlon X2 BE-2400 (DO),1M,45W,rev.G2,SocketAM2 	2.00G 	
0206 	
	  
Phenom IIX2 545 (HDX545WFK2DGI),3.0GHz,80W,rev.C2,SocketAM3,Dual-Core 	2.00G 	
0701 	
	  
Phenom IIX2 545( HDX545WFK2DGM),3.0GHz,512KB,rev.C3,80W,SocketAM3 	2.00G 	
1002 	
	  
Phenom IIX2 550 (HDZ550WFK2DGI),3.1GHz,80W,rev.C2,SocketAM3,Dual-Core 	2.00G 	
0701 	
	  
Phenom IIX2 550( HDX550WFK2DGM),3.1GHz,512KB,rev.C3,80W,SocketAM3 	2.00G 	
1002 	
	  
Phenom IIX2 555( HDZ555WFK2DGM),3.2GHz,512KB,rev.C3,80W,SocketAM3 	ALL 	
1002 	
	  
Phenom IIX2 560(HDZ560WFK2DGM),3.3GHz,512KB,rev.C3,80W,SocketAM3 	ALL 	
1801 	
	  
Phenom IIX3 700e (HD700EOCK3DGI),2.4GHz,65W,rev.C2,SocketAM3,Triple-Core 	2.00G 	
0701 	
	  
Phenom IIX3 705e (HD705EOCK3DGI),2.5GHz,65W,rev.C2,SocketAM3,Triple-Core 	2.00G 	
0701 	
	  
Phenom IIX3 710 (HDX710WFK3DGI),2.6GHz,95W,rev.C2,SocketAM3,Triple-Core 	2.00G 	
0206 	
	  
Phenom IIX3 715 (HDZ715WCJ3DGI),2.8GHz,95W,rev.C2,SocketAM2+,Triple-Core 	2.00G 	
0701 	
	  
Phenom IIX3 720 (HDX720WFK3DGI),2.8GHz,95W,rev.C2,SocketAM3,Triple-Core 	2.00G 	
0701 	
	  
Phenom IIX3 720 (HDZ720WFK3DGI),2.8GHz,95W,rev.C2,SocketAM3,Triple-Core 	2.00G 	
0206 	
	  
Phenom IIX3 740 (HDZ740WFK3DGI),3.0GHz,95W,rev.C2,SocketAM3,Triple-Core 	2.00G 	
0701 	
	  
Phenom IIX4 805 (HDX805WFK4FGI),2.5GHz,95W,rev.C2,SocketAM3,Quad-Core 	2.00G 	
0206 	
	  
Phenom IIX4 810 (HDX810WFK4FGI),2.6GHz,95W,rev.C2,SocketAM3,Quad-Core 	2.00G 	
0206 	
	  
Phenom IIX4 820 (HDX820WFK4FGI),2.8GHz,95W,rev.C2,SocketAM3,Quad-Core 	2.00G 	
0701 	
	  
Phenom IIX4 900e (HD900EOCK4DGI),2.4GHz,65W,rev.C2,SocketAM3,Quad-Core 	2.00G 	
0701 	
	  
Phenom IIX4 905e (HD905EOCK4DGI),2.5GHz,65W,rev.C2,SocketAM3,Quad-Core 	2.00G 	
0701 	
	  
Phenom IIX4 910 (HDX910WFK4DGI),2.6GHz,95W,rev.C2,SocketAM3,Quad-Core 	2.00G 	
0206 	
	  
Phenom IIX4 910E(HD910EOCK4DGM),2.6GHz,65W,rev.C3,SocketAM3,Quad-Core 	ALL 	
1002 	
	  
Phenom IIX4 925 (HDX925WFK4DGI),2.8GHz,95W,rev.C2,SocketAM3,Quad-Core 	2.00G 	
0206 	
	  
Phenom IIX4 925 (HDX925WFK4DGM),2.8GHz,95W,rev.C3,SocketAM3,Quad-Core 	2.00G 	
0902 	
	  
Phenom IIX4 945 (HDX945WFK4DGI),3.0GHz,2048KB,95W,rev.C2,SocketAM3,Quad-Core 	2.00G 	
0701 	
	  
Phenom IIX4 945 (HDX945WFK4DGM),3.0GHz,2048KB,95W,rev.C3,SocketAM3,Quad-Core 	2.00G 	
0902 	
	  
Phenom IIX4 960T (HD96ZTWFK4DGR),3.0GHz,95W,rev.E0,SocketAM3,Quad-Core 	ALL 	
1408 	
	  
Phenom IIX6 1035T(HDT35TWFK6DGR),2.6GHz,95W,rev.E0,SocketAM3,6-Core 	ALL 	
1304 	
	  
Phenom IIX6 1045T(HDT45TWFK6DGR),2.7GHz,95W,rev.E0,SocketAM3,6-Core 	ALL 	
1801 	
	  
Phenom IIX6 1055T(HDT55TWFK6DGR),2.8GHz,95W,rev.E0,SocketAM3,6-Core 	ALL 	
1304 	
	  
Phenom X3 8250e (HD8250ODJ3BGH),1.9GHz,rev.B3,65W,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X3 8400 (HD8400WCJ3BGD),2.1GHz,rev.B2,95W,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X3 8450 (HD8450WCJ3BGH),2.1GHz,rev.B3,95W,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X3 8450e (HD8450ODJ3BGH),2.1GHz,rev.B3,65W,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X3 8550 (HD8550WCJ3BGH),2.2GHz,rev.B3,95W,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X3 8600(HD8600WCJ3BGD),2.3GHz,95W,rev.B2,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X3 8600(HD860BWCJ3BGH),2.3GHz,95W,rev.B3,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X3 8650 (HD8650WCJ3BGH),2.3GHz,95W,rev.B3,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X3 8750 (HD8750WCJ3BGH),2.4GHz,rev.B3,95W,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X3 8750 (HD875ZWCJ3BGH),2.4GHz,rev.B3,95W,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X3 8850 (HD8850WCJ3BGH),2.4GHz,rev.B3,95W,SocketAM2+,Triple-Core 	2.00G 	
0206 	
	  
Phenom X4 9100e (HD910OBJ4BGD),1.8GHz,65W,rev.B2,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Phenom X4 9150e (HD9150ODGHBOX),1.8GHz,65W,rev.B3,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Phenom X4 9350 (HD9350ODJ4BGH),2.0GHz,65W,rev.B3,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Phenom X4 9450e (HD9450ODJ4BGH),2.1GHz,65W,rev.B3,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Phenom X4 9500 (HD9500WCJ4BGD),2.2GHz,rev.B2,95W,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Phenom X4 9550 (HD9550WCJ4BGH),2.2GHz,rev.B3,95W,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Phenom X4 9600 (HD9600WCJ4BGD),2.3GHz,95W,rev.B2,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Phenom X4 9600 (HD960ZWCJ4BGD),2.3GHz,95W,rev.B2,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Phenom X4 9650 (HD9650WCJ4BGH),2.3GHz,95W,rev.B3,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Phenom X4 9750 (HD9750WCJ4BGH),2.4GHz,95W,rev.B3,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Phenom X4 9850 (HD9850WCJ4BGH,rev.B3,SocketAM2+,Quad-Core 	2.00G 	
0206 	
	  
Sempron 140,SDX140HBK13GQ,2.7GHz,1024K,rev.C2,45W,SocketAM3 	2.00G 	
0706 	
	  
Sempron 145,SDX145HBK13GM,2.8GHz,1024K,rev.C3,45W,SocketAM3 	ALL 	
1407 	
	  
Sempron 180,SDX180HDK22GM,2.4GHz,512Kx2,rev.C3,45W,SocketAM3 	ALL 	
1103 	
	  
Sempron 2100+ (DD),512K,rev.G1,65W,SocketAM2 	2.00G 	
0206 	
	  
Sempron 2100+ (DO),512K,rev.G2,65W,SocketAM2 	2.00G 	
0206 	
	  
Sempron 2300+ (DO),512K,rev.G2,SocketAM2 	2.00G 	
0206 	
	  
Sempron LE-1100 (DE),256K,rev.G1,45W,SocketAM2 	2.00G 	
0206 	
	  
Sempron LE-1150 (DE),256K,rev.G1,45W,SocketAM2 	2.00G 	
0206 	
	  
Sempron LE-1200 (DE),512K,rev.G2,45W,SocketAM2 	2.00G 	
0206 	
	  
Sempron LE-1200 (DP),512K,rev.G2,45W,SocketAM2 	2.00G 	
0206 	
	  
Sempron LE-1250 (DP),512K,rev.G2,45W,SocketAM2 	2.00G 	
0206 	
	  
Sempron LE-1300 (DP),512K,rev.G2,45W,SocketAM2 	2.00G 	
0206