ASUS ROG STRIX Z690-E GAMING WIFI Driver Scan Result

PC Name:

ANONYMOUS
OS: Microsoft Windows 11 Pro/64bits

Manufacturer:

ASUS
Model: ROG STRIX Z690-E GAMING WIFI

The ASUS ROG Strix Z690-E Gaming WiFi is a high-performance motherboard designed for gamers and PC enthusiasts. Built with the latest Intel Z690 chipset, it supports 12th and 13th Gen Intel Core processors, delivering exceptional speed and power. Featuring robust WiFi 6E connectivity, DDR5 memory support, and multiple PCIe 5.0 slots, it offers top-tier performance and future-proof capabilities. With advanced cooling options, customizable RGB lighting, and a sleek, durable design, the Z690-E is perfect for building a premium gaming rig or high-performance workstation.

Driver name	Manufacturer	Version	Date	Download
$PCI\VEN_8086&DEV_467F&SUBSYS_86941043&REV_00$
$PCI\VEN_8086&DEV_467F&SUBSYS_86941043&REV_00$ RAID Controller				Download
$ACPI\VEN_INTC&DEV_1056$ Unknown Device				Download
$MMDEVAPI\AudioEndpoints$ AudioEndpoint
$MMDEVAPI\AudioEndpoints$ Odyssey G5 (NVIDIA High Definition Audio)	Microsoft	10.0.26100.1	2024-03-31
$USB\VID_2B89&PID_8761&REV_0200$ Bluetooth
$USB\VID_2B89&PID_8761&REV_0200$ Realtek Bluetooth 5.0 Adapter	Realtek Semiconductor Corp.	1.9.1041.3000	2022-01-24	Good
$USB\VID_8087&PID_0032&REV_0000$ Bluetooth
$USB\VID_8087&PID_0032&REV_0000$ Intel(R) Wireless Bluetooth(R)	Intel Corporation	23.150.0.3	2025-06-09	Good
$BTH\MS_BTHLE$ Microsoft Bluetooth LE Enumerator	Microsoft	10.0.26100.4484	2006-06-21
$BTH\MS_BTHBRB$ Microsoft Bluetooth Enumerator	Microsoft	10.0.26100.4484	2006-06-21
$BTH\MS_RFCOMM$ Bluetooth Device (RFCOMM Protocol TDI)	Microsoft	10.0.26100.4061	2006-06-21
$BTHLE\Dev_f46ad78c5f45$ Xbox Wireless Controller	Microsoft	10.0.26100.4484	2006-06-21
$BTHLEDevice\{00000001-5f60-4c4f-9c83-a7953298d40d}_Dev_VID&02045e_PID&0b13_REV&0517$ Bluetooth LE Generic Attribute Service	Microsoft	10.0.26100.4484	2006-06-21
$BTHLEDevice\{0000180f-0000-1000-8000-00805f9b34fb}_Dev_VID&02045e_PID&0b13_REV&0517$ Bluetooth LE Generic Attribute Service	Microsoft	10.0.26100.4484	2006-06-21
Computer
ACPI x64-based PC	Microsoft	10.0.26100.1	2006-06-21
$COMPUTER\{885A87B5-7FBB-52A4-9D5F-B4788A18F2AF}$ ASUS System Product Name	Microsoft	10.0.26100.1	2006-06-21
$PCI\VEN_10DE&DEV_2208&SUBSYS_88021043&REV_A1$ Display
$PCI\VEN_10DE&DEV_2208&SUBSYS_88021043&REV_A1$ NVIDIA GeForce RTX 3080 Ti	NVIDIA	32.0.15.7688	2025-06-24	Update
$UEFI\RES_{2fe2cbfc-b9aa-4a93-ab5b-40173b581c42}&REV_1$ Firmware
$UEFI\RES_{2fe2cbfc-b9aa-4a93-ab5b-40173b581c42}&REV_1$ Device Firmware	Microsoft	10.0.26100.1	2006-06-21
$UEFI\RES_{7aa69739-8f78-41cb-bf44-854e2cb516bd}&REV_F0609$ Device Firmware	Microsoft	10.0.26100.1	2006-06-21
$UEFI\RES_{80828903-3b14-563b-8864-9ceb25399a85}&REV_1720$ System Firmware	Microsoft	10.0.26100.1	2006-06-21
$PCI\VEN_8086&DEV_7AE2&SUBSYS_86941043&REV_11$ HDC
$PCI\VEN_8086&DEV_7AE2&SUBSYS_86941043&REV_11$ Standard SATA AHCI Controller	Microsoft	10.0.26100.4484	2006-06-21
$PCI\VEN_1B21&DEV_0612&SUBSYS_858D1043&REV_02$ Standard SATA AHCI Controller	Microsoft	10.0.26100.4484	2006-06-21
$USB\VID_0B05&PID_1996&REV_0013&MI_07$ HIDClass
$USB\VID_0B05&PID_1996&REV_0013&MI_07$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$USB\VID_0B05&PID_19AF&REV_0100&MI_02$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$USB\VID_3554&PID_FA09&REV_0102&MI_00$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_3554&PID_FA09&REV_0102&MI_01&Col03$ HID-compliant system controller	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_046D&PID_C547&REV_0402&MI_01&Col03$ HID-compliant system controller	Microsoft	10.0.26100.4484	2006-06-21
$USB\VID_0951&PID_171F&REV_6103&MI_01$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_0951&PID_171D&REV_0100&MI_03&Col01$ HID-compliant consumer control device	Microsoft	10.0.26100.1	2006-06-21
$HID\VID_258A&PID_010C&REV_1100&MI_01&Col02$ HID-compliant consumer control device	Microsoft	10.0.26100.1	2006-06-21
$HID\VID_0B05&PID_1988&REV_0200&MI_01$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$BTHLEDevice\{00001812-0000-1000-8000-00805f9b34fb}_Dev_VID&02045e_PID&0b13_REV&0517$ Bluetooth LE XINPUT compatible input device	Microsoft	10.0.26100.4484	2025-06-19
$USB\VID_3554&PID_FA09&REV_0102&MI_01$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$USB\VID_258A&PID_010C&REV_1100&MI_00$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_0951&PID_171F&REV_6103&MI_00$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_258A&PID_010C&REV_1100&MI_01&Col03$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$USB\VID_0951&PID_171D&REV_0100&MI_03$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_0951&PID_171F&REV_6103&MI_01&Col01$ HID-compliant consumer control device	Microsoft	10.0.26100.1	2006-06-21
$HID\VID_0951&PID_171D&REV_0100&MI_03&Col02$ HID-compliant headset	Microsoft	10.0.26100.4484	2009-04-21
$USB\VID_258A&PID_010C&REV_1100&MI_01$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$USB\VID_046D&PID_C547&REV_0402&MI_00$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_0951&PID_171F&REV_6103&MI_01&Col02$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$USB\VID_0951&PID_16A4&REV_0030&MI_03$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_0B05&PID_19AF&REV_0100&MI_02$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_3554&PID_FA09&REV_0102&MI_01&Col01$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_3554&PID_FA09&REV_0102&MI_01&Col06$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$HID\{00001812-0000-1000-8000-00805f9b34fb}_Dev_VID&02045e_PID&0b13_REV&0517$ HID-compliant game controller	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_046D&PID_C547&REV_0402&MI_02&Col01$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_0951&PID_16A4&REV_0030&MI_03&Col02$ HID-compliant headset	Microsoft	10.0.26100.4484	2009-04-21
$HID\VID_0951&PID_16A4&REV_0030&MI_03&Col01$ HID-compliant consumer control device	Microsoft	10.0.26100.1	2006-06-21
$USB\VID_0B05&PID_1988&REV_0200&MI_01$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_258A&PID_010C&REV_1100&MI_01&Col05$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$USB\VID_046D&PID_C547&REV_0402&MI_01$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_3554&PID_FA09&REV_0102&MI_01&Col02$ HID-compliant consumer control device	Microsoft	10.0.26100.1	2006-06-21
$HID\VID_0B05&PID_1996&REV_0013&MI_07$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_046D&PID_C547&REV_0402&MI_02&Col02$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_046D&PID_C547&REV_0402&MI_01&Col02$ HID-compliant consumer control device	Microsoft	10.0.26100.1	2006-06-21
$USB\VID_0951&PID_171F&REV_6103&MI_00$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_258A&PID_010C&REV_1100&MI_01&Col01$ HID-compliant system controller	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_258A&PID_010C&REV_1100&MI_01&Col06$ HID-compliant vendor-defined device	Microsoft	10.0.26100.4484	2006-06-21
$USB\VID_046D&PID_C547&REV_0402&MI_02$ USB Input Device	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_3554&PID_FA09&REV_0102&MI_01&Col04$ Keyboard
$HID\VID_3554&PID_FA09&REV_0102&MI_01&Col04$ HID Keyboard Device	Microsoft	10.0.26100.1882	2006-06-21
$HID\VID_3554&PID_FA09&REV_0102&MI_00$ HID Keyboard Device	Microsoft	10.0.26100.1882	2006-06-21
$HID\VID_258A&PID_010C&REV_1100&MI_00$ HID Keyboard Device	Microsoft	10.0.26100.1882	2006-06-21
$HID\VID_258A&PID_010C&REV_1100&MI_01&Col04$ HID Keyboard Device	Microsoft	10.0.26100.1882	2006-06-21
$HID\VID_046D&PID_C547&REV_0402&MI_01&Col01$ HID Keyboard Device	Microsoft	10.0.26100.1882	2006-06-21
$USB\VID_0951&PID_16A4&REV_0030&MI_00$ MEDIA
$USB\VID_0951&PID_16A4&REV_0030&MI_00$ HyperX Virtual Surround Sound	Microsoft	10.0.26100.4484	2025-06-19
$USB\VID_0B05&PID_1996&REV_0013&MI_00$ Realtek USB2.0 Audio	Microsoft	10.0.26100.1150	2024-07-03
$HDAUDIO\FUNC_01&VEN_10DE&DEV_009A&SUBSYS_10438802&REV_1001$ NVIDIA High Definition Audio	NVIDIA Corporation	1.4.3.2	2024-09-28	Update
$USB\VID_0955&PID_9000$ NVIDIA Virtual Audio Device (Wave Extensible) (WDM)	NVIDIA	4.65.0.3	2024-02-28	Good
$USB\VID_0951&PID_171D&REV_0100&MI_00$ HyperX QuadCast S	Microsoft	10.0.26100.4484	2025-06-19
$MONITOR\SAM74A6$ Monitor
$MONITOR\SAM74A6$ Generic Monitor (Odyssey G5)	Microsoft	10.0.26100.4484	2006-06-21
$MONITOR\BNQ7F59$ Generic Monitor (ZOWIE XL LCD)	Microsoft	10.0.26100.4484	2006-06-21
$HID\VID_258A&PID_010C&REV_1100&MI_01&Col07$ Mouse
$HID\VID_258A&PID_010C&REV_1100&MI_01&Col07$ HID-compliant mouse	Microsoft	10.0.26100.1150	2006-06-21
$HID\VID_3554&PID_FA09&REV_0102&MI_01&Col05$ HID-compliant mouse	Microsoft	10.0.26100.1150	2006-06-21
$HID\VID_046D&PID_C547&REV_0402&MI_00$ HID-compliant mouse	Microsoft	10.0.26100.1150	2006-06-21
$PCI\VEN_8086&DEV_2725&SUBSYS_00248086&REV_1A$ Net
$PCI\VEN_8086&DEV_2725&SUBSYS_00248086&REV_1A$ Intel(R) Wi-Fi 6E AX210 160MHz	Intel	23.150.0.4	2025-06-12	Update
$PCI\VEN_8086&DEV_15F3&SUBSYS_87D21043&REV_03$ Intel(R) Ethernet Controller (3) I225-V	Intel	1.1.3.28	2022-03-05	Update
$BTH\MS_BTHPAN$ Bluetooth Device (Personal Area Network)	Microsoft	10.0.26100.4061	2006-06-21	Update
$BTHENUM\{00001101-0000-1000-8000-00805f9b34fb}_LOCALMFG&0000$ Ports
$BTHENUM\{00001101-0000-1000-8000-00805f9b34fb}_LOCALMFG&0000$ Standard Serial over Bluetooth link (COM5)	Microsoft	10.0.26100.2161	2006-06-21
$PRINTENUM\LocalPrintQueue$ PrintQueue
$PRINTENUM\LocalPrintQueue$ Root Print Queue	Microsoft	10.0.26100.1	2006-06-21
$PRINTENUM\{084f01fa-e634-4d77-83ee-074817c03581}$ Microsoft Print to PDF	Microsoft	10.0.26100.1	2006-06-21
$ACPI\VEN_ACPI&DEV_0007$ Processor
$ACPI\VEN_ACPI&DEV_0007$ 12th Gen Intel(R) Core(TM) i9-12900K	Microsoft	10.0.26100.4652	2009-04-21
$PCI\VEN_15B7&DEV_5045&SUBSYS_504515B7&REV_01$ SCSIAdapter
$PCI\VEN_15B7&DEV_5045&SUBSYS_504515B7&REV_01$ Standard NVM Express Controller	Microsoft	10.0.26100.4484	2006-06-21
$PCI\VEN_15B7&DEV_5011&SUBSYS_501115B7&REV_01$ Standard NVM Express Controller	Microsoft	10.0.26100.4484	2006-06-21
$ACPI\VEN_MSFT&DEV_0101$ SecurityDevices
$ACPI\VEN_MSFT&DEV_0101$ Trusted Platform Module 2.0	Microsoft	10.0.26100.4652	2006-06-21	Good
$PCI\VEN_8086&DEV_7AC8&SUBSYS_86941043&REV_11$ System
$PCI\VEN_8086&DEV_7AC8&SUBSYS_86941043&REV_11$ Intel(R) PCI Express Root Port #25 - 7AC8	INTEL	10.1.37.5	1968-07-18	Good
$ACPI\VEN_PNP&DEV_0C09$ Microsoft ACPI-Compliant Embedded Controller	Microsoft	10.0.26100.1150	2006-06-21
$PCI\VEN_8086&DEV_7AA3&SUBSYS_86941043&REV_11$ Intel(R) SMBus - 7AA3	INTEL	10.1.37.5	1968-07-18	Good
$ACPI\VEN_PNP&DEV_0C0B$ ACPI Fan	Microsoft	10.0.26100.1150	2006-06-21
$PCI\VEN_10DE&DEV_1AEF&SUBSYS_88021043&REV_A1$ High Definition Audio Controller	Microsoft	10.0.26100.4484	2025-06-19
$ACPI\VEN_ACPI&DEV_000C$ ACPI Processor Aggregator	Microsoft	10.0.26100.1150	2006-06-21
$PCI\VEN_8086&DEV_460D&SUBSYS_86941043&REV_02$ Intel(R) PEG10 - 460D	INTEL	10.1.45.4	1968-07-18	Good
$ACPI\VEN_PNP&DEV_0100$ System timer	Microsoft	10.0.26100.1150	2006-06-21
$ACPI\ThermalZone$ ACPI Thermal Zone	Microsoft	10.0.26100.1150	2006-06-21
$ACPI\VEN_PNP&DEV_0C14$ Microsoft Windows Management Interface for ACPI	Microsoft	10.0.26100.1150	2006-06-21
$PCI\VEN_8086&DEV_7ACE&SUBSYS_86941043&REV_11$ Intel(R) LPSS: I2C Controller #2 - 7ACE	INTEL	10.1.37.5	1968-07-18	Update
$PCI\VEN_8086&DEV_7AB9&SUBSYS_86941043&REV_11$ Intel(R) PCI Express Root Port #2 - 7AB9	INTEL	10.1.37.5	1968-07-18	Good
$ACPI\VEN_PNP&DEV_0103$ High precision event timer	Microsoft	10.0.26100.1150	2006-06-21
$PCI\VEN_8086&DEV_7ABA&SUBSYS_86941043&REV_11$ Intel(R) PCI Express Root Port #3 - 7ABA	INTEL	10.1.37.5	1968-07-18	Good
$PCI\VEN_8086&DEV_7AD0&SUBSYS_86941043&REV_11$ High Definition Audio Controller	Microsoft	10.0.26100.4484	2025-06-19
$ACPI\VEN_PNP&DEV_0A08$ PCI Express Root Complex	Microsoft	10.0.26100.4484	2006-06-21
$ACPI\VEN_PNP&DEV_0C0C$ ACPI Power Button	Microsoft	10.0.26100.1150	2006-06-21
$ACPI_HAL\PNP0C08$ Microsoft ACPI-Compliant System	Microsoft	10.0.26100.4484	2006-06-21
$PCI\VEN_8086&DEV_7AA7&SUBSYS_86941043&REV_11$ Intel(R) Shared SRAM - 7AA7	INTEL	10.1.37.5	1968-07-18	Good
$PCI\VEN_8086&DEV_7AB0&SUBSYS_86941043&REV_11$ Intel(R) PCI Express Root Port #9 - 7AB0	INTEL	10.1.37.5	1968-07-18	Good
$PCI\VEN_8086&DEV_7ACD&SUBSYS_86941043&REV_11$ Intel(R) LPSS: I2C Controller #1 - 7ACD	INTEL	10.1.37.5	1968-07-18	Update
$ACPI_HAL\UEFI$ Microsoft UEFI-Compliant System	Microsoft	10.0.26100.1150	2006-06-21
$PCI\VEN_8086&DEV_7AB8&SUBSYS_86941043&REV_11$ Intel(R) PCI Express Root Port #1 - 7AB8	INTEL	10.1.37.5	1968-07-18	Good
$ACPI\FixedButton$ ACPI Fixed Feature Button	Microsoft	10.0.26100.1150	2006-06-21
$ACPI\VEN_ACPI&DEV_000E$ ACPI Wake Alarm	Microsoft	10.0.26100.1150	2006-06-21
$PCI\VEN_8086&DEV_7AA4&SUBSYS_86941043&REV_11$ Intel(R) SPI (flash) Controller - 7AA4	INTEL	10.1.37.5	1968-07-18	Good
$PCI\VEN_8086&DEV_467D&SUBSYS_86941043&REV_01$ Intel(R) Platform Monitoring Technology Driver	Intel(R) Platform Monitoring Technology Device	10.0.26100.3624	2006-06-21
$ACPI\VEN_INT&DEV_33A1$ Intel(R) Power Engine Plug-in	Microsoft	10.0.26100.4484	2006-06-21
$PCI\VEN_8086&DEV_464D&SUBSYS_86941043&REV_02$ Intel(R) PEG60 - 464D	INTEL	10.1.45.4	1968-07-18	Good
$ACPI\VEN_PNP&DEV_0000$ Programmable interrupt controller	Microsoft	10.0.26100.1150	2006-06-21
$PCI\VEN_8086&DEV_7AE8&SUBSYS_86941043&REV_11$ Intel(R) Management Engine Interface #1	Intel	2406.5.5.0	2024-02-08	Update
$PCI\VEN_8086&DEV_462D&SUBSYS_86941043&REV_02$ Intel(R) PEG11 - 462D	INTEL	10.1.45.4	1968-07-18	Good
$PCI\VEN_8086&DEV_7ACC&SUBSYS_86941043&REV_11$ Intel(R) LPSS: I2C Controller #0 - 7ACC	INTEL	10.1.37.5	1968-07-18	Update
$PCI\VEN_8086&DEV_7A84&SUBSYS_86941043&REV_11$ Intel(R) LPC Controller/eSPI Controller (Z690) - 7A84	INTEL	10.1.37.5	1968-07-18	Good
$PCI\VEN_8086&DEV_4660&SUBSYS_86941043&REV_02$ Intel(R) Host Bridge/DRAM Registers - 4660	INTEL	10.1.45.4	1968-07-18	Good
$PCI\VEN_8086&DEV_7AC0&SUBSYS_86941043&REV_11$ Intel(R) PCI Express Root Port #17 - 7AC0	INTEL	10.1.37.5	1968-07-18	Good
$USB\VID_0951&PID_171F&REV_6103$ USB
$USB\VID_0951&PID_171F&REV_6103$ USB Composite Device	Microsoft	10.0.26100.3912	2006-06-21
$USB\VID_174C&PID_2074&REV_0001$ Generic USB Hub	Microsoft	10.0.26100.4484	2025-06-19
$USB\VID_0B05&PID_1996&REV_0013$ USB Composite Device	Microsoft	10.0.26100.3912	2006-06-21
$USB\VID_0B05&PID_1988&REV_0200$ USB Composite Device	Microsoft	10.0.26100.3912	2006-06-21
$USB\VID_3554&PID_FA09&REV_0102$ USB Composite Device	Microsoft	10.0.26100.3912	2006-06-21
$USB\VID_0B05&PID_19AF&REV_0100$ USB Composite Device	Microsoft	10.0.26100.3912	2006-06-21
$USB\VID_214B&PID_7250&REV_0100$ Generic USB Hub	Microsoft	10.0.26100.4484	2025-06-19
$USB\VID_0951&PID_171D&REV_0100$ USB Composite Device	Microsoft	10.0.26100.3912	2006-06-21
$USB\VID_0951&PID_16A4&REV_0030$ USB Composite Device	Microsoft	10.0.26100.3912	2006-06-21
$USB\VID_258A&PID_010C&REV_1100$ USB Composite Device	Microsoft	10.0.26100.3912	2006-06-21
$PCI\VEN_8086&DEV_7AE0&SUBSYS_86941043&REV_11$ Intel(R) USB 3.20 eXtensible Host Controller - 1.20 (Microsoft)	Microsoft	10.0.26100.4484	2025-06-19
$USB\VID_05E3&PID_0608&REV_6090$ Generic USB Hub	Microsoft	10.0.26100.4484	2025-06-19
$USB\VID_046D&PID_C547&REV_0402$ LIGHTSPEED Receiver	Logitech	1.1.71.8468	2025-05-15
$USB\ROOT_HUB30&VID8086&PID7AE0&REV0011$ USB Root Hub (USB 3.0)	Microsoft	10.0.26100.4484	2025-06-19
$USB\VID_174C&PID_3074&REV_0001$ Generic SuperSpeed USB Hub	Microsoft	10.0.26100.4484	2025-06-19
$USB\VID_0B05&PID_19AF&REV_0100&MI_00$ USBDevice
$USB\VID_0B05&PID_19AF&REV_0100&MI_00$ AURA LED Controller	Microsoft	10.0.26100.1150	2006-06-21
$USB\VID_0B05&PID_1988&REV_0200&MI_00$ ROG RYUJIN II	Microsoft	10.0.26100.1150	2006-06-21