X301 Half Mini PCI-e & Mini PCI-e slots?

MINI PCI-E slot wireless network card solution mini pcie slot USB to Mini PCI-E Adapter with SIM Card Modem USB to Mini pci Mini pcie USB Adapter Pci miniature slot machine keychain PCIe slot Furthermore, other expansion slots run under a PCI Express interface with smaller form factors, such as mPCIe and slots

mini slot drain rt2880-pinmux pinctrl: pcie is