Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Model number | Frequency | L2 cache | Mult. | Voltage | Socket |
| --- | --- | --- | --- | --- | --- |
| Pentium II 266 | 267 MHz | 512 KB | 4× | 2.0V | Slot 1 |
| Pentium II 300 | 300 MHz | 512 KB | 4.5× | 2.0V | Slot 1 |
| Pentium II 333 | 333 MHz | 512 KB | 5× | 2.0V | Slot 1 |
| Pentium II Overdrive | 333 MHz | 512 KB | 5× | 3.3V | Socket 8 |
| Pentium II 350 | 350 MHz | 512 KB | 3.5× | 2.0V | Slot 1 |
| Pentium II 400 | 400 MHz | 512 KB | 4× | 2.0V | Slot 1 |
| Pentium II 450 | 450 MHz | 512 KB | 4.5× | 2.0V | Slot 1 |
Question:
What is Frequency, when Model Number is Pentium II 400?
Answer:
400 MHz