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 | sSpec number | Frequency | GPU frequency | L2 cache | I/O bus | Memory | Voltage | Socket | Release date | Part number(s) |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Atom N435 | SLC4C(A0) | 1.33 GHz | 200 MHz | 512 KB | DMI | 1 × DDR2-667 1 × DDR3-800 | 0.8–1.175V | FC-BGA 559 | June 2011 | AU80610007533AA |
| Atom N450 | SLBMG(A0) | 1.67 GHz | 200 MHz | 512 KB | DMI | 1 × DDR2-667 | 0.8–1.175V | FC-BGA 559 | December 21, 2009 | AU80610004653AA |
| Atom N455 | SLBX9(A0) | 1.67 GHz | 200 MHz | 512 KB | DMI | 1 × DDR2-800 1 × DDR3-800 | 0.8–1.175V | FC-BGA 559 | June 1, 2010 | AU80610006237AA |
| Atom N470 | SLBMF(A0) | 1.83 GHz | 200 MHz | 512 KB | DMI | 1 × DDR2-667 | 0.8–1.175V | FC-BGA 559 | March 1, 2010 | AU80610003495AA |
| Atom N475 | SLBX5(A0) | 1.83 GHz | 200 MHz | 512 KB | DMI | 1 × DDR2-800 1 × DDR3-800 | 0.8–1.175V | FC-BGA 559 | June 1, 2010 | AU80610006240AA |
Question:
What is I/O Bus, when Frequency is 1.67 GHz, and when sSpec Number is SLBMG(A0)?
Answer:
DMI