To locate the model and serial number of the PlayStation 3 system, look on the back of the system and locate the bar code sticker. Underneath the bar code you will see the 11-digit serial number followed by the model number which begins with 'CECH'. Free Repair Program for VAIO Fit 11A Personal Computer. Ps3 Model Cech-2001a Yours is a 320GB (which is a ton of space and can hold tons of games, pictures, movies, etc. Replacement Blue-ray DVD Drive Model KEM-450A KES-450A KEM-450AAA For Sony PS3 Slim CECH-2001A, CECH-2001B, CECH-2101A, CECH-2101B Playstation Models - 120, 250 GB 3.8 out of 5 stars 38 59.21 59. in fact, Where is my PS3 serial number online To locate the model and serial number of the PlayStation 3 system, look on the back of the system and locate the bar code sticker. PS3 Super Slim: CECH-4001B CECH-4001C PS3 Slim: CECH-2001A The Ultimate PS3 Repair Guide, YLOD. Verify if your computer needs repair: Select your notebook model, enter the last 7 digits of the product name (serial number), and then click the CHECK NOW button. It isn't backwards compatible, but it really isn't a big deal at all. Underneath the bar code you will see the 11-digit serial number followed by the model number which begins with CECH.