What Pulseaudio thinks ALSA is exporting.

pa_alsa.txt

index: 9
	name: <alsa_output.usb-Focusrite_Scarlett_Solo_4th_Gen_S17XYJD39206D8-00.analog-stereo.monitor>
	driver: <module-alsa-card.c>
	flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: IDLE
	priority: 1040
	volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
	        balance 0.00
	base volume: 65536 / 100% / 0.00 dB
	volume steps: 65537
	muted: no
	current latency: 0.00 ms
	max rewind: 0 KiB
	sample spec: s32le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 0
	linked by: 0
	configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
	monitor_of: 6
	card: 2 <alsa_card.usb-Focusrite_Scarlett_Solo_4th_Gen_S17XYJD39206D8-00>
	module: 24
	properties:
		device.description = "Monitor of Scarlett Solo 4th Gen Analog Stereo"
		device.class = "monitor"
		alsa.card = "1"
		alsa.card_name = "Scarlett Solo 4th Gen"
		alsa.long_card_name = "Focusrite Scarlett Solo 4th Gen at usb-0000:52:00.0-2.1.3, high speed"
		alsa.driver_name = "snd_usb_audio"
		device.bus_path = "pci-0000:52:00.0-usb-0:2.1.3:1.0"
		sysfs.path = "/devices/pci0000:00/0000:00:07.2/0000:50:00.0/0000:51:02.0/0000:52:00.0/usb5/5-2/5-2.1/5-2.1.3/5-2.1.3:1.0/sound/card1"
		udev.id = "usb-Focusrite_Scarlett_Solo_4th_Gen_S17XYJD39206D8-00"
		device.bus = "usb"
		device.vendor.id = "1235"
		device.vendor.name = "Focusrite-Novation"
		device.product.id = "8218"
		device.product.name = "Scarlett Solo 4th Gen"
		device.serial = "Focusrite_Scarlett_Solo_4th_Gen_S17XYJD39206D8"
		device.string = "1"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-usb"
    index: 10
	name: <alsa_input.usb-Focusrite_Scarlett_Solo_4th_Gen_S17XYJD39206D8-00.multichannel-input>
	driver: <module-alsa-card.c>
	flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: IDLE
	priority: 9040
	volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB,   rear-left: 65536 / 100% / 0.00 dB,   rear-right: 65536 / 100% / 0.00 dB
	        balance 0.00
	base volume: 65536 / 100% / 0.00 dB
	volume steps: 65537
	muted: no
	current latency: 0.00 ms
	max rewind: 0 KiB
	sample spec: s32le 4ch 44100Hz
	channel map: front-left,front-right,rear-left,rear-right
	             Surround 4.0
	used by: 0
	linked by: 0
	configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
	card: 2 <alsa_card.usb-Focusrite_Scarlett_Solo_4th_Gen_S17XYJD39206D8-00>
	module: 24
	properties:
		alsa.resolution_bits = "32"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "USB Audio"
		alsa.id = "USB Audio"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "1"
		alsa.card_name = "Scarlett Solo 4th Gen"
		alsa.long_card_name = "Focusrite Scarlett Solo 4th Gen at usb-0000:52:00.0-2.1.3, high speed"
		alsa.driver_name = "snd_usb_audio"
		device.bus_path = "pci-0000:52:00.0-usb-0:2.1.3:1.0"
		sysfs.path = "/devices/pci0000:00/0000:00:07.2/0000:50:00.0/0000:51:02.0/0000:52:00.0/usb5/5-2/5-2.1/5-2.1.3/5-2.1.3:1.0/sound/card1"
		udev.id = "usb-Focusrite_Scarlett_Solo_4th_Gen_S17XYJD39206D8-00"
		device.bus = "usb"
		device.vendor.id = "1235"
		device.vendor.name = "Focusrite-Novation"
		device.product.id = "8218"
		device.product.name = "Scarlett Solo 4th Gen"
		device.serial = "Focusrite_Scarlett_Solo_4th_Gen_S17XYJD39206D8"
		device.string = "hw:1"
		device.buffering.buffer_size = "1411200"
		device.buffering.fragment_size = "705600"
		device.access_mode = "mmap+timer"
		device.profile.name = "multichannel-input"
		device.profile.description = "Multichannel"
		device.description = "Scarlett Solo 4th Gen Multichannel"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-usb"