I used to have one of those, and my original cord got damaged (due to a dumb dog that chewed on it) I was able to use a cord from an old camera and it was perfectly compatible.

The port on the Wacom end is a Mini B

You could buy a left or right angle on Amazon, depending on which way you want the tablet to face.

https://www.amazon.com/Right-Angle-Adapter-Charge-Cable/dp/B07WGZ8QGZ

https://www.amazon.com/StarTech-com-USB2HABM3RA-91cm-Mini-Cable/dp/B004W8EIMW

As for the pen, you will probably have to order a new one on Amazon.

https://www.amazon.com/Wacom-INTUOS4-CINTIQ21-Grip-Pen/dp/B003JZNZR8