Table:
text: List of Intel Core i7 microprocessors
"Ivy Bridge (dual-core)" (22 nm)
"Ivy Bridge (dual-core)" (22 nm)
Model_number sSpec_number Cores Frequency Turbo L2_cache L3_cache GPU_model GPU_frequency Socket I_O_bus Release_date Part_numbers Release_price_USD_
Core i7-3537U SR0XG(L1) 2 2 GHz 9/11 2 × 256 KB 4 MB HD Graphics 4000 350–1200 MHz BGA-1023 DMI 2.0 January 2013 AV8063801119700 $346
Core i7-3667U SR0N5(L1) 2 2 GHz 10/12 2 × 256 KB 4 MB HD Graphics 4000 350–1150 MHz BGA-1023 DMI 2.0 June 2012 AV8063801057405 $346
Core i7-3687U SR0XH(L1) 2 2.1 GHz 10/12 2 × 256 KB 4 MB HD Graphics 4000 350–1200 MHz BGA-1023 DMI 2.0 January 2013 AV8063801119903 $356
Core i7-3689Y SR12R(L1) 2 1.5 GHz 9/11 2 × 256 KB 4 MB HD Graphics 4000 350–850 MHz BGA-1023 DMI 2.0 January 2013 AV8063801378203 $362

Question: What is the I/O bus if the sspec number sr0n5 (l1) is "Ivy Bridge (Dual-Core)" (22nm) in the Intel Core i7 (22nm) microprocessor list?