I have a 54L Givi, and it would be close to set your laptop right into the bottom of the case. BUT, the bottom is the smallest part, if you set a 2" thick towel in the bottom, your laptop would fit in there really nicely.
07 FJR 48,000 miles 03 Yamaha FJR1300
1986 Yamaha FZX700 1977 Kawasaki KX250 1978? Yamaha TY250 1979 Yamaha YZ250 1970 850 Moto Guzzi 1974? Honda XL 100 1978? Yamaha XT500 1975 Yamaha RD350B 1964 Bridgestone 90S