Yes, the system was available with integrated-only graphics. Generally, you can disable the discrete GPU as well, either in firmware or under the operating system.  
Are there E6440 models that are also available without AMD Radeon HD 8690M? And if this is not the case, can the AMD Radeon HD 8690M be disabled in the BIOS or UEFI? THX
Are there E6440 models that are also available without AMD Radeon HD 8690M?