This model has a Serial ATA (6 Gb/s) connector for a 2.5" hard drive. If configured with a "Fusion" Drive or an SSD at the initial time of system purchase, it also has a PCIe connector, but as first reported by site sponsor ++[link|https://blog.macsales.com/41360-unboxing-teardown-of-2017-21-5-inch-imac-non-retina-model|OWC]++, this connector is ''not'' present if the system only is configured with a hard drive.
This model has a SATA III (6 Gb/s) connector for a 2.5" hard drive or SSD. If the system is configured with an SSD or a "Fusion Drive" at the time of initial purchase, it also has a dedicated PCIe connection. If it was ''not'' configured with an SSD or a "Fusion Drive" initially, the applicable PCIe connector is not present and it is ''not possible'' to install a second drive later.
This model has a Serial ATA (6 Gb/s) connector for a 2.5" hard drive. If configured with a "Fusion" Drive or an SSD at the initial time of system purchase, it also has a PCIe connector, but as first reported by site sponsor ++[link|https://blog.macsales.com/41360-unboxing-teardown-of-2017-21-5-inch-imac-non-retina-model|OWC]++, this connector is ''not'' present if the system only is configured with a hard drive.
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This model has a SATA III (6 Gb/s) connector for a 2.5" hard drive or SSD. If the system is configured with an SSD or a "Fusion Drive" at the time of initial purchase, it also has a dedicated PCIe connection. If it was ''not'' configured with an SSD or a "Fusion Drive" initially, the applicable PCIe connector is not present and it is ''not possible'' to install a second drive later.
This model has a Serial ATA (6 Gb/s) connector for a 2.5" hard drive. If configured with a "Fusion" Drive or an SSD at the initial time of system purchase, it also has a PCIe connector, but as first reported by site sponsor ++[link|https://blog.macsales.com/41360-unboxing-teardown-of-2017-21-5-inch-imac-non-retina-model|OWC|new_window=true]++, this connector is ''not'' present if the system only is configured with a hard drive.
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This model has a Serial ATA (6 Gb/s) connector for a 2.5" hard drive. If configured with a "Fusion" Drive or an SSD at the initial time of system purchase, it also has a PCIe connector, but as first reported by site sponsor ++[link|https://blog.macsales.com/41360-unboxing-teardown-of-2017-21-5-inch-imac-non-retina-model|OWC]++, this connector is ''not'' present if the system only is configured with a hard drive.
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This model has a SATA III (6 Gb/s) connector for a 2.5" hard drive or SSD. If the system is configured with an SSD or a "Fusion Drive" at the time of initial purchase, it also has a dedicated PCIe connection. If it was ''not'' configured with an SSD or a "Fusion Drive" initially, the applicable PCIe connector is not present and it is ''not possible'' to install a second drive later.
Sorry, but your iMac don't wake PCI-E:
This model has a Serial ATA (6 Gb/s) connector for a 2.5" hard drive. If configured with a "Fusion" Drive or an SSD at the initial time of system purchase, it also has a PCIe connector, but as first reported by site sponsor ++[link|https://blog.macsales.com/41360-unboxing-teardown-of-2017-21-5-inch-imac-non-retina-model|OWC|new_window=true]++, this connector is ''not'' present if the system only is configured with a hard drive.