The Lenovo IdeaPad 3 14 Laptop, model number 81W0009DUS, is a mid-level, moderate use configuration, with its AMD Ryzen 3 3250U processor. This Dual-Core/Four-Thread processor has a base speed of 2.6GHz and a boost speed of up to 3.5GHz. This configuration has 8GB of DDR4-2400MHz RAM. It is good with Microsoft Office type programs, internet browsing and other moderate work. This model ships with Windows 10 S-Mode Operating System. Windows 10 S-Mode provides added security by only allowing APPs available ( and therefore certified by Microsoft) at the Microsoft Store. If you don't need the added security or you need to install APPs not available at the Microsoft Store, you can switch to standard Windows 10 Home 64-bit Operating System, at no additional cost.

That really will depend on the requirements and compatibility of the specific software you will need to use. The Lenovo IdeaPad 1 14 Laptop, model number 81VS0001US, ships with Windows 10 S-Mode Operating System. We recommend you check with the software publisher's web sites of the specific software you will need to use, for their compatibility with Windows 10 S-Mode 64-bit operating system (Windows 10 S-Mode provides added security by only allowing APPs available ( and therefore certified by Microsoft) at the Microsoft Store. If you don't need the added security or you need to install APPs not available at the Microsoft Store, you can switch to standard Windows 10 Home 64-bit Operating System, at no additional cost.) and the minimum/recommended hardware requirements (Is a Graphics card required, the processor speed and the minimum required system RAM and the minimum available hard drive space) to run their program, then compare those requirements to this system's configuration.

Yes. The Lenovo IdeaPad 3 15 Laptop, model number 81WE00KVUS, ships with an SD card slot.

That's correct. The monitor is sold separately.